Hi, A few days ago I update my box to 8-STABLE (RELENG_8) and start experience freezes using the VLC application. Of course no crashdump or trace to help diagnos the problem, so I start enabling some extra debug features in the kernel (kernel debug in the dev handbook) for ddb and so on. At this point there is no result so if there is some extra stuffs I can use to allow verbosity and understand the problem, I'll try it. regards Rodrigo See bellow some information for the system %uname -a FreeBSD home 8.2-PRERELEASE FreeBSD 8.2-PRERELEASE #2: Tue Feb 15 20:17:19 CET 2011 rodrigo@home:/usr/obj/usr/src/sys/GENERIC amd64 %kldstat Id Refs Address Size Name 1 32 0xffffffff80100000 dde628 kernel 2 1 0xffffffff80edf000 da5420 nvidia.ko 3 3 0xffffffff81c85000 424e8 linux.ko 4 1 0xffffffff81cc8000 24dd0 snd_hda.ko 5 2 0xffffffff81ced000 755e0 sound.ko 6 3 0xffffffff81d63000 45ed0 vboxdrv.ko 7 1 0xffffffff81e22000 3edc linprocfs.ko 8 2 0xffffffff81e26000 28ae vboxnetflt.ko 9 2 0xffffffff81e29000 8d44 netgraph.ko 10 1 0xffffffff81e32000 1532 ng_ether.ko 11 1 0xffffffff81e34000 d0c vboxnetadp.ko