On Jun 26, 2009, at 23:47 , Stuart Douglas wrote: It's a known but rare not-reproducible concurrency issue in the nested set implementation of the wiki. A simple SQL update fixes the data (kind of), so nobody has had the energy to investigate. Soon we'll have to decide if the wiki should be ported to Seam3, or if we move to jboss.org infrastructure, or switch to another software... or...