unhooking dlls

A last item - for about 1 week now every time upon startup we get an Explorer crash which says this -

EXPLORER caused an invalid page fault in
module <unknown> at 0000:00000000.
Registers:
EAX=00000000 CS=016f EIP=00000000 EFLGS=00010202
EBX=00000430 SS=0177 ESP=039ef730 EBP=039ef7d0
ECX=00000430 DS=0177 ESI=039ef7c8 FS=0fdf
EDX=039ef760 ES=0177 EDI=00000008 GS=0000
Bytes at CS:EIP:
00 00 00 00 65 04 70 00 16 00 db 04 65 04 70 00
Stack dump:
20b01a9e 00000430 00000000 039ef760 00000038 00000000 20b01e05 00000430 00000000 039ef760 00000038 00000000 81a41780 00000000 76003997 7600e404

Trying to get rid of the problem we click OK and Explorer starts up again. This time no crash but every time we try to Restart the computer (Start>Shutdown>Restart) the desktop icons and toolbars only go away and come back but not the desktop wallpaper indicating an incomplete shutdown. There is no power cycle and no monitor restart. We must again a second time click on Restart to get a "real" restart.

Sorry if this stumps everyone. It really does not appear to be a TLB problem at all. ???