I had some problems after upgrading to IOS 4.3 on my iphone 4.
When i delete a mail from the device, it was not removed in groupwise.
After a restart it looks like it's going better.
But each time i remove an mail-item from the device i see:

WDS1:/var/log/datasync/connectors # tail -f default.pipeline1.mobility-AppInterface.log | grep -i error
2011-03-11 13:18:11.442 ERROR [CP WSGIServer Thread-22] [moveItems:103] [userID:cn=admin,o=organisationXXX] [eventID:] [objectID:] [MoveItems] Success case

It is possible that this is also with IOS 4.2 iphone 4's. Can't test at the moment.

What does this mean?

I saw it before and after the reboot.

Please let me know.