LG Kp500 Cookie — Hangs very often and very slow

LG KP500 Cookie, it hangs with blue screen while transferring the data via USB through PC Suite II .

Steps :-

1. transfer some datas/songs via USB through PC Suite II
2. Tell your friend to send a SMS to your mobile
3. it will hang with blue screen here, and sometimes it won't switch off too .. we have to remove & insert the battery :-(

Note: This even happens sometimes with Bluetooth also .

And this KP 500 Cookie is really very slow and sometimes mis-behaving too :( with his multi-threading concept ..

My Handset info :
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Software version :: KP500AT_V10b