[Android Apps and Games] xebozone:
I have the same problem.

Here is my logcat (from the first time it appears we see your app, since I can't possibly post the whole thing):

I/ActivityManager( 747): Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10100000 cmp=de.goddchen.android.x.friendquiz/.FriendQuizListActivity } from pid 747
D/FlurryAgent(24378): startSession called
D/FlurryAgent(24378): Initializing Flurry session
D/FlurryAgent(24378): Starting new session
W/Settings(24378): Setting android_id has moved from android.provider.Settings.System to android.provider.Settings.Secure, returning read-only value.
D/FlurryAgent(24378): Sending report to: http://data.flurry.com/aap.do
D/FlurryAgent(24378): Sending report exception: Connection to http://data.flurry.com refused
W/InputManagerService( 747): Starting input on non-focused client com.android.internal.view.IInputMethodClient$Stub$Proxy@40915ff0 (uid=10001 pid=24459)
W/IInputConnectionWrapper(24459): showStatusIcon on inactive InputConnection
W/KeyCharacterMap(24378): No keyboard for id 0
W/KeyCharacterMap(24378): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
D/FlurryAgent(24378): Ending sessionD/dalvikvm(24459): GC_CONCURRENT freed 272K, 61% free 3983K/9991K, external 92K/513K, paused 2ms+2ms
D/dalvikvm(24459): GC_CONCURRENT freed 226K, 58% free 4254K/9991K, external 92K/513K, paused 3ms+4ms
D/dalvikvm(24459): GCFORMALLOC freed 393K, 60% free 4095K/9991K, external 92K/513K, paused 23ms
I/dalvikvm-heap(24459): Grow heap (frag case) to 7.507MB for 1060016-byte allocation
D/dalvikvm(24459): GCFORMALLOC freed 1035K, 60% free 4095K/9991K, external 92K/513K, paused 22ms
D/dalvikvm(24459): GC_CONCURRENT freed 9K, 60% free 4095K/9991K, external 92K/513K, paused 3ms+3ms
D/dalvikvm( 747): GCEXTERNALALLOC freed 98K, 39% free 9317K/15111K, external 2989K/2996K, paused 107msD/dalvikvm(24459): GC_CONCURRENT freed 444K, 59% free 4123K/9991K, external 92K/513K, paused 2ms+4ms
D/dalvikvm(24459): GC_CONCURRENT freed 262K, 57% free 4332K/9991K, external 92K/513K, paused 2ms+2ms
D/dalvikvm(24459): GCFORMALLOC freed 235K, 59% free 4096K/9991K, external 92K/513K, paused 28ms
I/dalvikvm-heap(24459): Grow heap (frag case) to 7.509MB for 1060016-byte allocation
D/dalvikvm(24459): GCFORMALLOC freed 1035K, 59% free 4096K/9991K, external 92K/513K, paused 24ms
D/dalvikvm(24459): GC_CONCURRENT freed 9K, 59% free 4096K/9991K, external 92K/513K, paused 2ms+3ms
W/KeyCharacterMap( 747): No keyboard for id 0
W/KeyCharacterMap( 747): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
W/InputManagerService( 747): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@40b32278
D/KEEPSCREEN IS(25158): [39] jackpal.androidterm2
D/dalvikvm(24883): GC_EXPLICIT freed <1K, 51% free 2687K/5379K, external 0K/0K, paused 39ms
D/FlurryAgent(24378): Sending report to: http://data.flurry.com/aap.do
D/FlurryAgent(24378): Sending report exception: Connection to http://data.flurry.com refused
D/dalvikvm( 747): GCEXTERNALALLOC freed 78K, 39% free 9307K/15111K, external 2737K/2738K, paused 107ms
D/dalvikvm( 747): GCEXTERNALALLOC freed 11K, 39% free 9308K/15111K, external 2437K/2454K, paused 101ms
I/ActivityManager( 747): Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10100000 cmp=de.goddchen.android.x.friendquiz/.FriendQuizListActivity } from pid 747
D/FlurryAgent(24378): startSession called
D/FlurryAgent(24378): Initializing Flurry session
D/FlurryAgent(24378): Starting new session
W/Settings(24378): Setting android_id has moved from android.provider.Settings.System to android.provider.Settings.Secure, returning read-only value.
D/FlurryAgent(24378): Sending report to: http://data.flurry.com/aap.do
D/FlurryAgent(24378): Sending report exception: Connection to http://data.flurry.com refused
W/InputManagerService( 747): Starting input on non-focused client com.android.internal.view.IInputMethodClient$Stub$Proxy@40915ff0 (uid=10001 pid=24459)
W/IInputConnectionWrapper(24459): showStatusIcon on inactive InputConnection
I/ActivityManager( 747): Displayed de.goddchen.android.x.friendquiz/.FriendQuizListActivity: +234ms
I/ActivityManager( 747): Starting: Intent { cmp=com.facebook.katana/.ProxyAuth (has extras) } from pid 24378
I/ActivityManager( 747): Displayed com.facebook.katana/.ProxyAuth: +280ms
D/FlurryAgent(24378): Ending session
D/dalvikvm(24388): GC_CONCURRENT freed 570K, 48% free 4117K/7879K, external 483K/513K, paused 2ms+3ms
D/Facebook-authorize(24378): Login failed: invalid_key
D/FlurryAgent(24378): startSession called
D/FlurryAgent(24378): Initializing Flurry session
D/FlurryAgent(24378): Continuing previous session
W/InputManagerService( 747): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@40939178
D/dalvikvm( 747): GCEXTERNALALLOC freed 155K, 39% free 9328K/15111K, external 2938K/2959K, paused 107ms
D/dalvikvm( 747): GCEXTERNALALLOC freed 25K, 39% free 9314K/15111K, external 2598K/2627K, paused 105ms
I/ActivityManager( 747): Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10100000 cmp=jackpal.androidterm2/.Term } from pid 747
D/FlurryAgent(24378): Ending sessionD/dalvikvm(24459): GC_CONCURRENT freed 449K, 59% free 4124K/9991K, external 92K/513K, paused 3ms+2ms

I see stuff about connections being refused and keys failing.

Check your facebook developer account, maybe?