[Kolab and Kontact] Error uploading folder

[Thomas Off]

Hello!

I'm using Kontact 1.1.1/KDE 3.4.1 on Kubuntu and Koloab 2 Stable as my server. 
Everything works well except that everytime I'm checking my mail accounts, 
Kontact shows me an erro message saying it can't upload one of the folders 
for Kolab to the server.
Did anyone else have this problem and solve it? As I said, it works but the 
error message is pretty annoying.
Thanks in advance!

Regards,
Thomas Off <t.off at lumonet.de>