This just started. When I enter tasks. The left bottom menu item "Complete" is disabled. The only way I can make a task complete is by using the stylus. Does anyone have any idea what the problem is?

If I shut down tasks then go back into tasks, it's enabled. Once I complete one task, bam, it's disabled again. No matter what item is selected. completed or not.

This windows mobile OS is really frustrating. It never seems to work on a consitent basis. I recently hard reset my treo to fix other problems and decided to not install any other software, just synch. Now this problem starts up. Not a major problem but just annoying.