Does your phone freeze when you send as a mms or to a email address? If your phone is only freezing up when uploading to facebook then could be issue with your facebook application. Delete the facebook application by going to Options> Applications> Highlight facebook> Hit the Menu Button (BB Key)> Click Delete and Choose reboot the device. It should be under downloads to reinstall back to your phone. I hope this helps
In addition to what tech said, I can tell you what works for me. Every single Monday, I pull my battery out and then reboot. A friend told me about this when my bb was freezing or just rebooting itself. The day doesn't matter, I just do it on Mondays because that is also when I back up my phone. Hope it helps!
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