[LG Optimus 2x] withoutwings:
Weird, it only did it the first time or two I ran those apps and hasn't since (so no log). Can only speculate that somehow they needed some time to "settle" at first... I dunno. Anyway, no issue anymore it seems!

---------- Post added at 01:21 AM ---------- Previous post was at 12:53 AM ----------

Spoke too soon - I can get the browser to consistently "disappear" on me by pressing the search button (for 'quick search') and typing a few letters:

I/ActivityManager( 1620): START {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.android.browser/.BrowserActivity bnds=[384,707][480,800]} from pid 2599
D/ ( 1482): @@(WM8994)@@ ACWM8994SetPowerMode(), CurrPowerMode = 1, PowerMode = 1
I/ActivityManager( 1620): Start proc com.android.browser for activity com.android.browser/.BrowserActivity: pid=8929 uid=10004 gids={3003, 1015}
D/OpenGLRenderer( 2599): Flushing caches (mode 1)
D/OpenGLRenderer( 2599): Flushing caches (mode 0)
I/ActivityThread( 8929): Pub com.android.browser;browser: com.android.browser.provider.BrowserProvider2
I/ActivityThread( 8929): Pub com.android.browser.home: com.android.browser.homepages.HomeProvider
I/ActivityThread( 8929): Pub com.android.browser.snapshots: com.android.browser.provider.SnapshotProvider
E/libEGL ( 8929): call to OpenGL ES API with no current context (logged once per thread)
D/ShaderProgram( 8929): couldn't load the vertex shader!
E/libEGL ( 8929): call to OpenGL ES API with no current context (logged once per thread)
D/ShaderProgram( 8929): couldn't load the vertex shader!
E/libEGL ( 8929): call to OpenGL ES API with no current context (logged once per thread)
D/ShaderProgram( 8929): couldn't load the vertex shader!
E/libEGL ( 8929): call to OpenGL ES API with no current context (logged once per thread)
D/ShaderProgram( 8929): couldn't load the vertex shader!
E/libEGL ( 8929): call to OpenGL ES API with no current context (logged once per thread)
D/ShaderProgram( 8929): couldn't load the vertex shader!
D/WebViewTimersControl( 8929): onBrowserActivityResume
D/WebViewTimersControl( 8929): Resuming webview timers, view=com.android.browser.BrowserWebView@40eb6fc0
W/BaseUi ( 8929): mMainView is already attached to wrapper in attachTabToContentView!
W/BaseUi ( 8929): mContainer is already attached to content in attachTabToContentView!
V/NFC ( 8929): this device does not have NFC support
I/Process ( 1620): Sending signal. PID: 8929 SIG: 3
I/dalvikvm( 8929): threadid=3: reacting to signal 3
I/dalvikvm( 8929): Wrote stack traces to '/data/anr/traces.txt'
D/libEGL ( 8929): loaded /system/lib/egl/libGLES_android.so
D/libEGL ( 8929): loaded /system/lib/egl/libEGL_tegra.so
D/libEGL ( 8929): loaded /system/lib/egl/libGLESv1_CM_tegra.so
D/libEGL ( 8929): loaded /system/lib/egl/libGLESv2_tegra.so
D/OpenGLRenderer( 8929): Enabling debug mode 0
I/ActivityManager( 1620): Displayed com.android.browser/.BrowserActivity: +932ms
D/OpenGLRenderer( 2599): Flushing caches (mode 2)
D/OpenGLRenderer( 2599): Flushing caches (mode 0)
W/NvAudioDevice( 1490): @@(Device.cpp-hal)@@ setOutputMute(mute=1)
D/dalvikvm( 1620): GC_CONCURRENT freed 1768K, 48% free 8846K/16839K, paused 3ms+10ms
I/ActivityManager( 1620): Start proc com.google.android.googlequicksearchbox for content provider com.google.android.googlequicksearchbox/.google.GoogleSuggestionProvider: pid=9008 uid=10051 gids={3003}
I/ActivityThread( 9008): Pub com.google.android.googlequicksearchbox.shortcuts: com.google.android.googlequicksearchbox.WebHistoryProvider
I/ActivityThread( 9008): Pub com.google.android.googlequicksearchbox.google: com.google.android.googlequicksearchbox.google.GoogleSuggestionProvider
I/QSB.QsbApplication( 9008): allowSuggestionLoginCreation
I/ActivityManager( 1620): Start proc com.google.android.gsf.login for service com.google.android.gsf.login/com.google.android.gsf.loginservice.GoogleLoginService: pid=9030 uid=10045 gids={3003, 1015, 1007, 2001, 3006}
I/ActivityManager( 1620): No longer want com.google.android.gsf.login (pid 9030): hidden #1
D/androidNetworkLocationListeners( 8660): Still have listener com.google.android.location.internal.client.NetworkLocationClient$1@41093338
D/androidNetworkLocationListeners( 8660): Still have listener com.google.android.location.internal.client.NetworkLocationClient$1@41093338
I/QSB.GenieClient( 9008): request: chars=1;feeds=[qs, ns];loc=true;auth=false
D/gps_BRCM( 1620): gps thread received 1 events
D/gps_BRCM( 1620): gps control fd event
D/dalvikvm( 1620): GC_EXPLICIT freed 191K, 49% free 8745K/16839K, paused 3ms+10ms
I/QSB.GenieClient( 9008): response: suggestions=0;0;0;0;0;0;0;
I/ActivityManager( 1620): No longer want com.google.android.googlequicksearchbox (pid 9008): hidden #1
D/gps_BRCM( 1620): gps thread received 1 events
D/gps_BRCM( 1620): gps control fd event
I/ActivityThread( 8929): Removing dead content provider: com.google.android.googlequicksearchbox.google
D/androidNetworkLocationListeners( 8660): Still have listener com.google.android.location.internal.client.NetworkLocationClient$1@41093338
I/ActivityManager( 1620): Kill com.android.browser (pid 8929): provider com.google.android.googlequicksearchbox.google.GoogleSuggestionProvider in dying process com.google.android.googlequicksearchbox
I/ActivityManager( 1620): Process com.android.browser (pid 8929) has died.
I/WindowManager( 1620): WIN DEATH: Window{40eb8008 com.android.browser/com.android.browser.BrowserActivity paused=false}
W/WindowManager( 1620): Force-removing child win Window{40f1da00 PopupWindow:40e95048 paused=false} from container Window{40eb8008 com.android.browser/com.android.browser.BrowserActivity paused=false}
W/ActivityManager( 1620): Force removing ActivityRecord{41106238 com.android.browser/.BrowserActivity}: app died, no saved state
W/WindowManager( 1620): Failed looking up window
W/WindowManager( 1620): java.lang.IllegalArgumentException: Requested window android.os.BinderProxy@416e1760 does not exist
W/WindowManager( 1620): at com.android.server.wm.WindowManagerService.windowForClientLocked(WindowManagerService.java:7185)
W/WindowManager( 1620): at com.android.server.wm.WindowManagerService.windowForClientLocked(WindowManagerService.java:7176)
W/WindowManager( 1620): at com.android.server.wm.WindowState$DeathRecipient.binderDied(WindowState.java:1545)
W/WindowManager( 1620): at android.os.BinderProxy.sendDeathNotice(Binder.java:417)
W/WindowManager( 1620): at dalvik.system.NativeStart.run(Native Method)
I/WindowManager( 1620): WIN DEATH: null
W/InputManagerService( 1620): Got RemoteException sending setActive(false) notification to pid 8929 uid 10004
D/gps_BRCM( 1620): gps thread received 1 events
D/gps_BRCM( 1620): gps control fd event
W/InputConnectionWrapper.ICC( 1831): Timed out waiting on IInputContextCallback

What is your analysis?