Strange, it just refuses to work in my case. Could you export one more thing for me, the registry key for this task in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tasks ?
Belay my latest request - Task Scheduler cannot be messed with from the registry, so I'll leave it as it stands - this is a non-issue I would be rectifying with a sledgehammer (i.e. reinstall). And it does work as it is set now.
The only thing that springs to my mind as the possible cause of this bizarre glitch is that I transferred my language settings to system accounts to get rid of the floating language bar. I'll see about that eventually.