freebsd stable - Jan 2010 - 8.0 regression: mouse redrawing in console eats too much cpu and doesn't look good

Hello,

Since moving from 6.4 to 8.0 I noticed that usage of mouse (usb) in 
console has somewhat regressed:
First, as soon as I start moving my mouse interrupts increase to 15-18 % 
as seen in top(1).  That's way too much and seems like a bug.
Second, mouse cursor looks worse.  It used to be solid while now it 
looks half transparent as if its redrawing was not synced or something.

Regards,

Martin