Jailbroken iPhone 4 stuck in boot loop

[RalstonBA]

I believe I'm on iOS 5.0.1. I havent updated anything in Cydia in over a week. Today my phone randomly died (while at 90 something percent battery) during a phone call, I was not able to restart it by holding the power button. I plugged it in, and it restarted. A couple hours later (aka a few minutes ago) it died again (at 80 something percent battery). Again, it would not restart via the power button. I plugged it in and again it restarted, but this time it died again within a few minutes. Plugging it in now doesn't result in it restarting, it is now stuck in a boot loop. The Apple logo lights up for 10 seconds, then goes away to a black screen, then the process repeats itself. If anyone knows how to fix this, your help would be much appreciated.