Hey guys i found this thing on another forum and this really works
How to fix slow start-up on Symbian OS 9.1/9.2 Phone
Here are the easy steps
1. Turn-Off your phone and remove SIM card and Memory Card.
2. Insert a new SIM card from different GSM Provider.
3. Turn-On your phone for a few minutes, then turn-off and remove the SIM card.
Note: Since a new SIM card is inserted, symbian OS will remove old configuration and create a brand new configurations, in other words, existing junk will also be deleted and removed, therefore, you will recover some phone memory space.
4. Re-Insert your original SIM card and Memory Card again.
5. Turn-On your phone again, and this time your phone should start faster and some phone memory will be released due to some junk had been removed.
Note: Please remember to reset your Messaging setting to save your sms messages to memory card again, and recheck all audio and video application setting that has option whether to save to "phone memory" or "memory card".