I am not quite sure, but I suspect my Cisco VPN Client for OS X is triggering some crashes on the MacBook Pro. Only when I have been using the VPN Client, suspend the machine, then wake it up again, the system becomes unstable in some cases. Once, I got a OS X death screen right away, the other time I just got the blue screen, and the activity LED on the front was just off. This so far only seems to happen after I have been using the VPN Client. The current release of the client is 4.9.0180, and is already pretty old. Funny enough the Cisco webpage lists only OS X 10.4 and 10.5 as supported, and not 10.6, which has been out for what… 9 months or so? If I find anything new on this, I will update this post.
Update: There is Tunnelblick, a free UI for OpenVPN, which can be used as well. Trying this out now, to see if it is any better.
Update: So far no more crashes. I’ve used Tunnelblick for some weeks now. So I guess the Cisco client indeed is the culprit