I've read that BOINC 6.6.36 finally did something related to the lockfile problem. No word yet on whether it fixes this problem, and since this version has problems with GPU use (as well as use under Linux), I'm not planning to try it.
My best guess is that the installed Fedora 8 x86_64 has seen too many upgrades and requires a re-installation from scratch (downloading Fedora 11 x86_64 right now).
The only odd thing is, that this host never ran into any Validation problems on any other Project (?!)
If that doesn't help, I'm out of ideas. RAM was already exchanged, Vcore set back to Auto, cooling was improved (temps are well in the green).
System now underwent the following changes
- new CPU
- new RAM
- new OS
- HD freshly setup from scratch
- maximized cooling
...still validation failures (RALPH and Rosetta).
Apart from changing the case color or stuff like that, there's absolutely nothing I could do as this point.
For that reason I've stopped running RALPH and Rosetta alltogether, seems these are deep buried problems that started sometime 2 years ago when general stability and furthermost reliability was notably decreased under x86_64 Linux.
Sad to say that, but Rosetta just doesn't fulfill my min. stability requirements since those days...