I'm using Biz calendar (and it's widget), APW widgets (calendar), ES Explorer, LGCamera free, Camera FV-5 free, gMail, Quick Pic and few other minor very rarely used apps. Basicaly it serves me as a phone/calendar
Since time to time as navi.
The only thing that comes to my mind is that it may be related to some adjustments in the ROM. Then when you use other launchers and GoLocker it may cause some 'stuttering'.
Anyway - it works rather flawlessly
BTW - is it possible to import/adapt codecs used in old 2.3.3? I.e. of the ROM XXKI2 -> I9001XXKI2_I9001XXKI2_I9001OXAKI1_HOME.tar.md5
It's about codec's used by Samsung - the old ones are way better. This results in audio (coding) quality.
Differences are huge - especially in comparison to the codecs used on newer ROM's (starting from 2.3.4 up to current ROM's). Samsung did not want to pay licence fees, so they changed the codecs to the ones with poor quality.
There's a thread on XDA and one of polish SGS+ forums about this.
On PL forum there's a thread with above mentioned ROM - it has 'battery drain issues', but HQ codecs. The difference in A/V recording/playing is significant
KQB + Several MODs / SGS+