Slow respons when closing submenus

Hi,

When the auto submenu closing is set (time to close doesn't seem to matter), and 2 or more submenus are opened, the system seems to be very inresponsive when moving the mouse to the taskbar. The last opened submenu is closed normally, but the mainmenu and first opened submenu stay opened for a long time (2 seconds or so). The mouse pointer moves very very slowly....

Has anyone seen this behaviour too?

Occasionally, the mouse pointer also changes suddenly. The normal mouse pointer is replaced by the 'move' pointer, which is very annoying.

These problems are occuring since installing v3.0 ???