[Nook Touch Themes and Apps] dalkor:
Thank you for your reply.

Reboot didn't help. As a matter of fact, even restoring from backup and rooting and installing gapps again didn't help with my problem.

Here is a log of Gtalk launch attempt:

I/ActivityManager( 792): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x14000000 cmp=com.google.android.talk/.SigningInActivity }
I/ActivityManager( 792): Start proc com.google.android.talk for activity com.google.android.talk/.SigningInActivity: pid=9951 uid=10027 gids={3003}
E/TC ( 1100): KPICollector: 1359733191417 platform process_start {"processName":"com.google.android.talk"}
I/dalvikvm( 9951): Debugger thread not active, ignoring DDM send (t=0x41504e4d l=38)
D/EPD#Dialog( 792): resetRegion 2
D/NATIVE-EPD( 792): epd_reset_region: 0x04
D/EPD#Dialog( 792): Disable EPD for 100ms!!!!!!!!
E/TC ( 1100): KPICollector: 1359733191797 ActivityManager background {"component":"com.harasoft.relaunch/.AllApplications"}
E/TC ( 1100): KPICollector: 1359733191822 ActivityManager foreground {"component":"com.google.android.talk/.SigningInActivity"}
I/dalvikvm( 9951): Debugger thread not active, ignoring DDM send (t=0x41504e4d l=50)
I/ActivityThread( 9951): Publishing provider com.google.android.talk.SuggestionProvider: com.google.android.talk.SuggestionsProvider
I/ActivityManager( 792): Starting activity: Intent { act=android.intent.action.VIEW cmp=com.google.android.talk/.BuddyList (has extras) }
D/EPD#Dialog( 792): resetRegion 2
D/NATIVE-EPD( 792): epd_reset_region: 0x04
D/EPD#Dialog( 792): Disable EPD for 100ms!!!!!!!!
V/Activity( 9951): performResume()
D/EPD#ActivityResume( 792): resetRegion 4
D/NATIVE-EPD( 792): epd_reset_region: 0x10
D/EPD#ActivityResume( 792): resetRegion 5
D/NATIVE-EPD( 792): epd_reset_region: 0x20
D/EPD#ActivityResume( 792): resetRegion 6
D/NATIVE-EPD( 792): epd_reset_region: 0x40
D/EPD#ActivityResume( 792): resetRegion 7
D/NATIVE-EPD( 792): epd_reset_region: 0x80
D/EPD#ActivityResume( 792): Disable EPD for 350ms!!!!!!!!
D/SurfaceFlinger( 792): Frame buffer posted; elapsed time = 14 msecs
W/GTalkService( 844): [ChatMgr] notifyChatClosed caught android.os.DeadObjectException, removing listener com.google.android.gtalkservice.IChatListener$Stub$Proxy@49eafb48
D/AndroidRuntime( 9951): Shutting down VM
W/dalvikvm( 9951): threadid=3: thread exiting with uncaught exception (group=0x4001b170)
E/AndroidRuntime( 9951): Uncaught handler: thread main exiting due to uncaught exception
E/AndroidRuntime( 9951): java.lang.RuntimeException: Binary XML file line #20: You must supply a layout_width attribute.
E/AndroidRuntime( 9951):	at android.content.res.TypedArray.getLayoutDimension(TypedArray.java:438)
E/AndroidRuntime( 9951):	at android.view.ViewGroup$LayoutParams.setBaseAttributes(ViewGroup.java:3487)
E/AndroidRuntime( 9951):	at android.view.ViewGroup$MarginLayoutParams.<init>(ViewGroup.java:3567)
E/AndroidRuntime( 9951):	at android.widget.LinearLayout$LayoutParams.<init>(LinearLayout.java:1265)
E/AndroidRuntime( 9951):	at android.widget.LinearLayout.generateLayoutParams(LinearLayout.java:1191)
E/AndroidRuntime( 9951):	at android.widget.LinearLayout.generateLayoutParams(LinearLayout.java:45)
E/AndroidRuntime( 9951):	at android.view.LayoutInflater.parseInclude(LayoutInflater.java:694)
E/AndroidRuntime( 9951):	at android.view.LayoutInflater.rInflate(LayoutInflater.java:614)
E/AndroidRuntime( 9951):	at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
E/AndroidRuntime( 9951):	at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
E/AndroidRuntime( 9951):	at com.google.android.talk.RosterListAdapter.newView(RosterListAdapter.java:84)
E/AndroidRuntime( 9951):	at android.widget.CursorAdapter.getView(CursorAdapter.java:182)
E/AndroidRuntime( 9951):	at android.widget.HeaderViewListAdapter.getView(HeaderViewListAdapter.java:191)
E/AndroidRuntime( 9951):	at android.widget.AbsListView.obtainView(AbsListView.java:1496)
E/AndroidRuntime( 9951):	at android.widget.ListView.makeAndAddView(ListView.java:1818)
E/AndroidRuntime( 9951):	at android.widget.ListView.fillDown(ListView.java:654)
E/AndroidRuntime( 9951):	at android.widget.ListView.fillFromTop(ListView.java:736)
E/AndroidRuntime( 9951):	at android.widget.ListView.layoutChildren(ListView.java:1585)
E/AndroidRuntime( 9951):	at android.widget.AbsListView.onLayout(AbsListView.java:1314)
E/AndroidRuntime( 9951):	at android.view.View.layout(View.java:6863)
E/AndroidRuntime( 9951):	at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
E/AndroidRuntime( 9951):	at android.view.View.layout(View.java:6863)
E/AndroidRuntime( 9951):	at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1119)
E/AndroidRuntime( 9951):	at android.widget.LinearLayout.layoutVertical(LinearLayout.java:998)
E/AndroidRuntime( 9951):	at android.widget.LinearLayout.onLayout(LinearLayout.java:918)
E/AndroidRuntime( 9951):	at android.view.View.layout(View.java:6863)
E/AndroidRuntime( 9951):	at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
E/AndroidRuntime( 9951):	at android.view.View.layout(View.java:6863)
E/AndroidRuntime( 9951):	at android.view.ViewRoot.performTraversals(ViewRoot.java:996)
E/AndroidRuntime( 9951):	at android.view.ViewRoot.handleMessage(ViewRoot.java:1633)
E/AndroidRuntime( 9951):	at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 9951):	at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime( 9951):	at android.app.ActivityThread.main(ActivityThread.java:4363)
E/AndroidRuntime( 9951):	at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 9951):	at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime( 9951):	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
E/AndroidRuntime( 9951):	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
E/AndroidRuntime( 9951):	at dalvik.system.NativeStart.main(Native Method)
I/ActivityManager( 792): Removing old ANR trace file from /data/anr/traces.txt
W/ActivityManager( 792): Send CRASH intent: true
I/Process ( 792): Sending signal. PID: 9951 SIG: 3
D/EPD#ActivityManager( 792): resetRegion 4
D/NATIVE-EPD( 792): epd_reset_region: 0x10
D/EPD#ActivityManager( 792): resetRegion 5
D/NATIVE-EPD( 792): epd_reset_region: 0x20
D/EPD#ActivityManager( 792): resetRegion 6
D/NATIVE-EPD( 792): epd_reset_region: 0x40
D/EPD#ActivityManager( 792): resetRegion 7
D/NATIVE-EPD( 792): epd_reset_region: 0x80
I/dalvikvm( 9951): threadid=7: reacting to signal 3
D/DeviceManagerBroadcastReceiver( 1075): action (com.bn.devicemanager.ACTION_HANDLE_CRASH)
I/dalvikvm( 9951): Wrote stack trace to '/data/anr/traces.txt'
I/Process ( 9951): Sending signal. PID: 9951 SIG: 9
I/ActivityManager( 792): Process com.google.android.talk (pid 9951) has died.
I/WindowManager( 792): WIN DEATH: Window{4a142690 com.google.android.talk/com.google.android.talk.BuddyList paused=false}
V/Activity( 3543): performResume()
D/EPD#ActivityResume( 792): resetRegion 4
D/NATIVE-EPD( 792): epd_reset_region: 0x10
D/EPD#ActivityResume( 792): resetRegion 5
D/NATIVE-EPD( 792): epd_reset_region: 0x20
D/EPD#ActivityResume( 792): resetRegion 6
D/NATIVE-EPD( 792): epd_reset_region: 0x40
D/EPD#ActivityResume( 792): resetRegion 7
D/NATIVE-EPD( 792): epd_reset_region: 0x80
D/EPD#ActivityResume( 792): Disable EPD for 350ms!!!!!!!!
I/UsageStats( 792): Unexpected resume of com.harasoft.relaunch while already resumed in com.google.android.talk
D/EPD#Dialog( 792): resetRegion 2
D/NATIVE-EPD( 792): epd_reset_region: 0x04
D/EPD#Dialog( 792): Disable EPD for 100ms!!!!!!!!
D/SurfaceFlinger( 792): Frame buffer posted; elapsed time = 19 msecs
E/TC ( 1100): KPICollector: 1359733194430 ActivityManager foreground {"component":"com.harasoft.relaunch/.AllApplications"}
D/ReLaunchApp( 3543): --- onResume(AllApps)
W/InputManagerService( 792): Got RemoteException sending setActive(false) notification to pid 9951 uid 10027
D/SurfaceFlinger( 792): Frame buffer posted; elapsed time = 31 msecs
I/DeviceManagerHandler( 1075): HandleMessage(): msg.what (1)
I/global ( 1075): Default buffer size used in BufferedWriter constructor. It would be better to be explicit if an 8k-char buffer is required.
I/LogcatProcessor( 1075): LOG END MARKER - 1359733195433
I/PowerManagerService( 792): setPowerState: mPowerState=0x3 newState=0x3 noChangeLights=false reason=1
I/PowerManagerService( 792): setPowerState: mPowerState=0x3 newState=0x3 noChangeLights=false reason=1
I/PowerManagerService( 792): setPowerState: mPowerState=0x3 newState=0x3 noChangeLights=false reason=1
I/ActivityManager( 792): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x14000000 cmp=com.google.android.talk/.SigningInActivity }
I/ActivityManager( 792): Start proc com.google.android.talk for activity com.google.android.talk/.SigningInActivity: pid=9966 uid=10027 gids={3003}
E/TC ( 1100): KPICollector: 1359733197068 platform process_start {"processName":"com.google.android.talk"}
I/dalvikvm( 9966): Debugger thread not active, ignoring DDM send (t=0x41504e4d l=38)
D/EPD#Dialog( 792): resetRegion 2
D/NATIVE-EPD( 792): epd_reset_region: 0x04
D/EPD#Dialog( 792): Disable EPD for 100ms!!!!!!!!
E/TC ( 1100): KPICollector: 1359733197125 ActivityManager background {"component":"com.harasoft.relaunch/.AllApplications"}
E/TC ( 1100): KPICollector: 1359733197146 ActivityManager foreground {"component":"com.google.android.talk/.SigningInActivity"}
I/dalvikvm( 9966): Debugger thread not active, ignoring DDM send (t=0x41504e4d l=50)
I/ActivityThread( 9966): Publishing provider com.google.android.talk.SuggestionProvider: com.google.android.talk.SuggestionsProvider
I/ActivityManager( 792): Starting activity: Intent { act=android.intent.action.VIEW cmp=com.google.android.talk/.BuddyList (has extras) }
D/EPD#Dialog( 792): resetRegion 2
D/NATIVE-EPD( 792): epd_reset_region: 0x04
D/EPD#Dialog( 792): Disable EPD for 100ms!!!!!!!!
V/Activity( 9966): performResume()
D/EPD#ActivityResume( 792): resetRegion 4
D/NATIVE-EPD( 792): epd_reset_region: 0x10
D/EPD#ActivityResume( 792): resetRegion 5
D/NATIVE-EPD( 792): epd_reset_region: 0x20
D/EPD#ActivityResume( 792): resetRegion 6
D/NATIVE-EPD( 792): epd_reset_region: 0x40
D/EPD#ActivityResume( 792): resetRegion 7
D/NATIVE-EPD( 792): epd_reset_region: 0x80
D/EPD#ActivityResume( 792): Disable EPD for 350ms!!!!!!!!
D/SurfaceFlinger( 792): Frame buffer posted; elapsed time = 11 msecs
W/GTalkService( 844): [ChatMgr] notifyChatClosed caught android.os.DeadObjectException, removing listener com.google.android.gtalkservice.IChatListener$Stub$Proxy@49f3a6a8
D/AndroidRuntime( 9966): Shutting down VM

I don't know, if it's of any help, but hope it is.