OS 10.5.8 sync error message

Since I installed a suggested security update from Apple a few days ago I keep getting the message:

Database Reset Allert

Inconsistencies in your sync information for Bookmarks were detected and have been repaired.

The next sync for Mobile Me and Safari may take longer than usual.

This message pops up every 10 minutes and, after 3 days, is getting quite annoying now.

I have checked my sync settings and have synced about 3 times, not including the automatic sync, but this still keeps happening.

If anyone has any suggestions I would be most grateful.

thanks

jackie