.synkron.syncdb
is the problem. IF i "cancel" the collision message, or X it (to close) OR press OK without check something, the program write:

001.txt<->2009-12-03T14:51:38

in the ".synkron.syncdb" file. I i kill THIS line, the message "collision" come again.
If i make this file ".synkron.syncdb" unwriteable, then it works too, but other things like "deleting" files etc. are not working then :-D