First of all, great job on this ROM. I think the features and look and feel really put it ahead over winner's version of CM9. I especially love the amazing customizability of the notification toggles.
I've only got one issue so far: I can't seem to get my Google account to update - specifically I don't get new Gmail or GVoice messages until I manually refresh. I started on Build 21, but I also restored apps using Titanium Backup... so maybe my problems could've started there.
These are the things I've tried so far:
1. Clear Caches, Re-flash Gapps.
2. Cleared Data on the Google Account Manager app.
3. Removed and re-added the Account in Accounts & Sync setting.
I'm just seeing if anyone has any other suggestions before I try a full wipe. I'm willing to full wipe and refresh if someone thinks it'll help, but I'd like to hear a couple other suggestions before I spend the time doing that.