Hi i'm having a PC with Vista Ultimate SP1 full updates. this problem happened to me after like 6 months of using Vista and now runs for another 6 month, my PC is very heavily loaded with applications, and it takes like 15 minutes to reboot completely, and this problem is killing me. It most likely happens when i download heavily, and extremely when i download using Torrents, but these days it just happens after a few hours and no, it wont go away anytime. I've got every software installed (whatever u may think of) but what i think is this bug is caused by M$ updates. non of the solutions worked for me CPU Dual Core 3.0GHz 4mb L2 Cache RAM 3GB Axtrom MB Gigabyte VGA nVidia 7800 GT and i dont user any wireless networks, ADSL trough the router modem.