Regarding Internal Storage issue - Please help

hi guys,

please help me out.. i have no games installed on my device. only required few apps out of which most of them are moved to sd card. all my music/photos is on sd card. yet the internal storage space fills up very quicly and even i cant update my existing apps. an error crops up - not sufficient storage left.

I have to reformat my phone again and again to get storage space reclaimed.