Error message help - rtc:lost some interupts at 1024Hz

HI all,
I have been running AsteriskNOW on a Microsoft Virtual OC 2007.
After booting into the Asteris console, at the Asterisk CLI, I keep getting the message as below:

rtc: lost some interrupts at 1024Hz

I have no clue what happen here, does anybody have any ideas? Please help!