Clemens wrote:

There have been some reports about problems with Zope and BSD, which are actually caused by some operating system stack overflow or such. Maybe a similar problem applies here, too?

For those issues see: http://www.zwiki.org/FreeBSD and http://zwiki.org/IssueNo0226 Zwiki's troubleshouting guide might also be usefull: http://zwiki.org/AdministrationGuide#trouble Also have a look at Simon's list of things he tried to improve Zwiki's Reliability, http://zwiki.org/SiteReliability Regards, PieterB PS i'm not subscribed to this list but I hope the moderators will let this message through.