Well I re-rooted on 7.2.3 and have been unable to get Google chat to load. It always insta-crashes. I have tried all manner of combinations of installing from the system folder with no luck. Also, I can't even get accountsyncsettings.apk to install. Anyone having similar difficulties?
I've finally got root today and I'm on 7.2.3. I was able to get the acountsyncsettings working via the instructions on this page but gtalk/chat crashes on startup.
Edit: here's a log, it may help to figure out something.
12-24 16:48:54.990 E/DatabaseUtils(481): java.lang.IllegalArgumentException: Unknown URL content://com.google.android.providers.talk/accounts/status
12-24 16:48:54.990 E/DatabaseUtils(481): at com.google.android.gsf.talk.TalkProvider.queryInternal(TalkProvider.java:1732)
12-24 16:48:54.990 E/DatabaseUtils(481): at com.google.android.gsf.talk.TalkProvider.query(TalkProvider.java:1436)
12-24 16:48:55.029 E/AndroidRuntime(2714): Caused by: java.lang.IllegalArgumentException: Unknown URL content://com.google.android.providers.talk/accounts/status
12-24 16:48:55.029 E/AndroidRuntime(2714): at com.google.android.talk.DatabaseUtils.getAllAccountInfos(DatabaseUtils.java:77)
12-24 16:48:55.029 E/AndroidRuntime(2714): at com.google.android.talk.TalkApp$RetrieveGTalkAccounts.doInBackground(TalkApp.java:833)
12-24 16:48:55.029 E/AndroidRuntime(2714): at com.google.android.talk.TalkApp$RetrieveGTalkAccounts.doInBackground(TalkApp.java:821)
12-24 16:48:55.053 E/DatabaseUtils(481): java.lang.IllegalArgumentException: Unknown URL content://com.google.android.providers.talk/accountSettings/1
12-24 16:48:55.053 E/DatabaseUtils(481): at com.google.android.gsf.talk.TalkProvider.queryInternal(TalkProvider.java:1732)
12-24 16:48:55.053 E/DatabaseUtils(481): at com.google.android.gsf.talk.TalkProvider.query(TalkProvider.java:1436)