Today I got back from a week's holiday and turned my iPad on for the first time in 8 days. Since then, I have had nothing but trouble with it. It keeps disconnecting from the wifi for no reason, 3G has disappeared and apps keep crashing (including the iPad forum app!).
I have rebooted several times but it is still glitchy. I would be tempted to restore it but I think I will lose my jailbreak. I have an iPad 1 jail broken on 4.3.3.