Vista - High CPU utilization by system and NDIS.SYS

I've been send from group to group, and hope this is the one

I've recently been having problems while vista is booting.

Sometimes, during boot, my CPU utilization is an average of 90% for a minute
or 5. During this time, the process "system" is taking up all the resources.
Atfer this period my mouse stops working, and the screen goes blank.
Capslock
is still responsive, bit that about it.

kernrate tells me that ntkrnlpa is using all the resources, and
processexplorer show that a thread is blocking ntkrnlpa from continuing.
The blocking thread is consuming an average of 50% on the thread
ndis.sys!TrFilterDprIndicateReceiveComplete

It also seams to get wors. Started out with once a day, now i get it
continues until i disable the WLAN and LAN adapter prior to booting.
When I enable it after the system has normally booted, everything is fine.

I tried the following after surfing the internet without result:
- I have installed new version for my broadcom LAN, but for the WLAN there
are no updates.
- Uninstalled WLAN drivers.

Does anybody recognize this issue, or know a fix for it (besides the
workaround with the disabled wireless adapter). It very frustrating and i
don't want to reinstall my PC yet

Regards,
Martijn