In certain sync scenarios, it is possible that Tomboy will think several notes have been deleted, and cause them to be removed from all synchronized computers.

Steps to reproduce:

0. Clear sync server; have lots of notes on computer 1 that aren't on computer 2
1. Sync computer 1
2. Sync computer 2
3. Restart Tomboy on computer 2
4. Sync computer 2
5. Sync computer 1

Expected results:

Computer 1 and computer 2 have the same notes, which are equivalent to (computer 1's original notes) + (computer 2's original notes).

Actual results:

Both computers have Computer 2's original notes, but many of Computer 1's original notes are deleted (on both computers).

What's happening here is that when Computer 2 does its original sync (step 2), it is not always saving the new notes to the file system.  So once Tomboy is restarted, the notes disappear, which is interpreted as a willful deletion.  Computer 1 syncs the results of that deletion, and note disappear.

They can be restored from ~/.tomboy/Backup, but you may need to clear out the sync server and start over again.

Will attach the patch that fixes this in Tomboy 0.12.3 and 0.13.2.