i had been getting random BSODs from time to time since beta 17539 to RC 2. Errors caused by: ntoskrnl.exe tcpip.sys afd.sys bcm4sbxp.sys I'm now using beta 17427 and WinXP. No BSOD. p/s: my utorrent was mainly running for RSS update, without downloading any torrent. it has no issue on download/upload speed, but it just crashes the windows at an unexpected moment.