Personal one, here.
My laptop (Win 7 Home Premium, FWIW) has recently taken to not resuming from hibernate. It turns on, puts up the "resuming Windows" text and pretty icon and then sits there for ever. If I turn it off and restart it, it boots just fine.
I recently put full-disk encryption on it with TrueCrypt, however the problem is more recent than that so I'm not sure they're related.
Any suggestions as to what is wrong with it?