I've been having issues with the wallet ever since upgrading to v1.0.7.3. When I use coin control and combine blocks to send to my address, the coins get tied up in an unconfirmed status until I end up using the check wallet function, then repair wallet. Never had these issues with v1.0.7.2
At this time you must update to v1.1.0 if you want to be on the correct fork!