v2.30.1130 is not cleaning my tray notification cache. I even restarted and it's still there. OS Windows 7 32bit. I don't use that option that much but the last version it worked.
Typically you have to manually end task "Explorer.exe", then manually start "Explorer.exe" using Task Manager, then reboot the system for it properly work. Well at least that's what I have to do in WinXP for to function properly.