My Curve flipped out for the first time today since I got it earlier this year

I had an incoming call, tried to pick it up and all I got was "Please wait..." and a timer that never seemed to stop. Even after the call my phone slowed to a halt with the eggtimer continuously moving.....

I did a battery pull and all seems okay now. I want to know what happened though. Is this normal (every 6 months or so)? What could it have been?

Wirelessly posted (Verizon 8830)

It may have been a matter of you being low on memory.and your battery pull resolved it.