I have the same problem on my iPad 1. I haven't down loaded anything from cydia since December, I removed snowboard and activator and the problem seems to be gone, I have had both sb and activator on this iPad for 2 jailbreaks and never had this problem until last week.
Tom
Really, you haven't downloaded anything for 6 months and it has started to misbehave? And what is snowboard? No such app or tweak as far as I know? Activator is absolutely 100% compatible with the iPad. What version of IOS are you running? 5.1.1 is the most recent, but you can't be running that if you have not updated anything since last year. Maybe time to update?