With that stack trace, it first showed in 19.0a1/20121105. Here is a crash report: bp-cb9bf9ac-052a-4f46-b98e-b4f922121209. android.database.sqlite.SQLiteDatabaseLockedException: database is locked (code 5) at android.database.sqlite.SQLiteConnection.nativeExecute(Native Method) at android.database.sqlite.SQLiteConnection.execute(SQLiteConnection.java:677) at android.database.sqlite.SQLiteSession.beginTransactionUnchecked(SQLiteSession.java:323) at android.database.sqlite.SQLiteSession.beginTransaction(SQLiteSession.java:298) at android.database.sqlite.SQLiteDatabase.beginTransaction(SQLiteDatabase.java:505) at android.database.sqlite.SQLiteDatabase.beginTransaction(SQLiteDatabase.java:416) at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:249) at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:164) at org.mozilla.gecko.db.DBUtils.ensureDatabaseIsNotLocked(DBUtils.java:76) at org.mozilla.fennec.db.BrowserProvider.getDatabaseHelperForProfile(BrowserProvider.java:1692) at org.mozilla.fennec.db.BrowserProvider.getReadableDatabase(BrowserProvider.java:1726) at org.mozilla.fennec.db.BrowserProvider.query(BrowserProvider.java:2324) at android.content.ContentProvider.query(ContentProvider.java:652) at android.content.ContentProvider$Transport.query(ContentProvider.java:189) at android.content.ContentResolver.query(ContentResolver.java:372) at android.content.ContentResolver.query(ContentResolver.java:315) at org.mozilla.gecko.db.LocalBrowserDB.filterAllSites(LocalBrowserDB.java:174) at org.mozilla.gecko.db.LocalBrowserDB.getTopSites(LocalBrowserDB.java:227) at org.mozilla.gecko.db.BrowserDB.getTopSites(BrowserDB.java:118) at org.mozilla.gecko.AboutHomeContent.loadTopSites(AboutHomeContent.java:261) at org.mozilla.gecko.AboutHomeContent.access$600(AboutHomeContent.java:71) at org.mozilla.gecko.AboutHomeContent$9.run(AboutHomeContent.java:396) at android.os.Handler.handleCallback(Handler.java:615) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:137) at org.mozilla.gecko.util.GeckoBackgroundThread.run(GeckoBackgroundThread.java:31) More reports at: https://crash-stats.mozilla.com/report/list?signature=android.database.sqlite.SQLiteDatabaseLockedException%3A+database+is+locked+%28code+5%29+at+android.database.sqlite.SQLiteConnection.nativeExecute%28Native+Method%29

It's #2 top crasher in 19.0b1 and similar to bug 791958. It happens only on JB.

passing it on to Lucas as comment# 1 suggests it could be similar to bug 791958.Please feel free to reassign if needed.

Lucas, this looks like it could be a dupe

Please help us dupe here Lucas, we want to make sure we're investigating all open issues.

I'd say it's very likely that they are duplicates. Dup'ing.

We're tracking bug 791958, so no need to track this bug.