I noticed it refused to auto update the included QuickPic. It gave a notification that the certificate was not signed correctly. Then this morning it gave the same error when ROM Manager tried to auto update.
For QuickPic, i uninstalled, then tried reinstall from market but it gave a different error which I can't remember, sorry. I was able to restore via Titanium BU though.
I also noticed Gmail app receives ok but sent mails sit in the outbox stuck on "sending" but don't actually send.