CPU utilization with little guest utilization.

I notice when I run b3120, that the host OS (MBP, core2duo 2.16Ghz) has the parallels task running constantly at about 20-50% of the system CPU, on both cores. When I look at the XP task manager, it is always at nearly no CPU utilization. Is this normal?

 

Seems to be "normal" for 3120 and the latest betas. But it's not "normal" for 1970 or 1940.

 

I've had the same thing for the latest beta's.
Beta 2 used to consume around 15-20% constantly for me, the later releases have increased that to 50-60%

(MBP, CoreDuo, 2GHz)