I think it has something to do with the way the download/install accesses the system through Windows. It be giving off a false signal for the reboot.
yes, i can see that happening once, maybe twice. but for it to happen the last three updates concerns me a little. are you running a 64bit os?
Nonetheless there has been no problems with this from my end.
no problems on this end either, that i have noticed. just the reboot thing. but still, i like to keep tabs on what is going on with this system as it is my gaming system, which is clocked to it's full potential. so any wrong (or right) system change, can have a great effect on this thing.