Go to settings > apps > all > and then do clear cache and data for media storage and gallery... then reboot nd wait for sme time till entire media scanner gets ovr... scanner takes lots of time...I'm having problems with Titanium Backup. The backups don't work. I've tried a couple of 4.0.4 ROMs in between but the backups have been taken from ICSSGS.
Also Gallery has duplicates of every picture? The 'wrong' ones can't be previewed, though...
Initially i used to delete apps or put .nodatadata file in /datadata...My phone said it was running low on memory, but there was 1.6 GB left?
I couldn't resolve the issue so I tried CM9, but I think ICSSGS is much better! I can't wait for RC5!