Hey G! You know, there is something to that, my co-worker popped several cards and power supplies with-in the last year alone.
In fact just yesterday Apple support was replacing a fried cap in one board of his system when I came in at 7am, they worked on it all night. He has a new system not even a year old yet. It is not uncommon for a batch of bad caps to find their way into the MFG sector. Panaphonic (sic) was plagued with this problem. Imagine having to replace tiny little caps on multi-layered cards. :d:
I'm a single user.
The only program that runs on crashing time is Protools.
And what's more , I do have to switch the machine off and on again with the power button. alt/option/esc doesn't work, ditto for the finder. escapod utility doesn't help.
I run janitor utility for manual clean up.
I'm connected to the inetrnet with ethernet.
andreasbert, just for the heck of it, flip the time 12 hours, if possible, and see if the problem continues.
Believe it or not, some local TV affiliates are testing their HD (open air) digital broadcast systems at specific times of the day. We have encountered many problems in the field, especially on VHF wireless systems at these times, so happens it is in the afternoon here, and is for one show only. Could be a digital RFI interference thing, leaking into your system somehow.