Hi,

My specific problem was the combination of OL 2010 and Softalk Share Server running on the same PC. But probably this also occurs if OL 2010 is just using SSS as a mailserver.

It was solved by downgrading to OL 2007.

If you have the same situation, OL 2010-SSS on the same PC, you will also run into more problems, like OL stalling and a massive amount of temp files in the SSS database.

SSS just isn't (yet?) compatible with OL 2010, but problems are also reported with other (even Exchange) servers.

You just have to abandon OL 2010 asap and use an earlier version instead.

Jos