iOs 5.0.1 jailbreak problem

Ok.. So I have jailbroken my phone successfully and I've seen alot of great things you can do, I've used cydia and I've explored quite a bite.. well now I notice my springboard keeps crashing and I can't figure out why.. my phone will reload and it will have the beep sound for the reboot but my load screen takes longer and freezes before the phone comes on and now the phone lags..

My main problem is, its that I can live with the phone going slower however, with this iOs 5.0.1 jailbreak I can no longer send picture messages. I can receieve them but I can't send any type of MMS message. I've tried numerous so called fixes and its making me really ****ing angry.

Now I'm just wondering if I can't fix the problem how do I completely remove the jailbreak while keeping everying I have still on my phone such as my music, picture and contacts?

 

oh, I aplogize I saw a few people talking about jailbreaks on here.. So I was unaware.. aslo a few people posted pics of their screens and they were jailbroken.