Updated my Acer a500 to ICS this morning and now its all screwed up. It freezes on the boot screen when I try to power up, I have to try this many times before it takes. When I get I finally get on, instead of going into sleep mode it powers off and I have to go through the freeze on the boot screen again, this happens even if I power it off and try to power on. Once it's on, everything runs just fine, it's just getting it on that's the problem. It has always worked perfectly until the ICS update. Would appreciate any help.