I've turned domain quotas off, and the problem was solved. Thanks for helping.
> > > > > Hi all, > > > > > > I'm having some problems trying to upgrade my vpopmail 5.2 > > to 5.4.0. The > > > compilation goes well (no errors at this stage), but after the > > > instalation, just a few minutes later, the load of the > > server begins to > > > get high, very high... :-(. When issuing a top, I see a lot > > of process > > > of vdelivermail eating all cpu resources: > > > > >