Mobiola webcam doesn't work with Vista!
I tried it because their site said it was compatible, it did work and was great so I paid for it. THEN I put the PC to sleep and when it woke up, it bluescreened (the first I've had on Vista!), rebooted, bluescreened again and did a memory dump then finally rebooted and was ok. I was able replicate the problem every time I used sleep and quickly discovered that uninstalling Mobiola resolved the problem.
Evidentally, the driver it uses causes big problems for Vista which I bore out with various forum results from a google search.
I am running Vista Ultimate 32Bit Retail.