Kristina Rothe wrote:
(no hardware problem, we very often changed it because we assumed that maybe RAM is not working correctly)
Error messages are mainly
kalliope mysqld[343]: 070811 17:53: 54 Aborted connection 167 to db: 'wikidb' user: 'wikiuser' host: 'localhost' (Got an error reading communication packets)
[notice] child pid 1071 exit signal Segmentation fault (11)
A segmentation fault means either a bug in the program (either MySQL or PHP/Apache here, I'm not sure which) or that you're having hardware problems (bad memory, overheating processor, etc).
It's not clear whether the segmentation fault is causing the communications error or if the communications error is causing an error condition that leads to a segmentation fault.
Either way, I'd recommend trying something other than Debian-unstable. Maybe compile current MySQL/PHP/Apache from source just to get different versions in there.
-- brion vibber (brion @ pobox.com)