/dev/rtc issue

Am using Parallels 2.1 build 1670 with Gentoo Linux (2.6.16-gentoo-r6 kernel) as the host OS, and consistently get a warning when starting a winXP VM:

Parallels Workstation encountered a problem with the /dev/rtc device. This may be caused by one of the following reasons: (1) you do not have proper system permissions, (2) the device is not found in your host PC, (3) the device is used by another process. The absence of /dev/rtc device may downgrade VM performance and make internal timers slow.​

But /dev/rtc does exist (links to /dev/misc/rtc), /dev/misc/rtc is world readable, and 'grep rtc /etc/udev/rules.d/*'
produces

/etc/udev/rules.d/50-udev.rules:KERNEL=="rtc", NAME="misc/%k", SYMLINK+="%k", MODE="0666"​

However, as I understand it, /dev/rtc can only be accessed by one app at a time. Is this correct? If so, is there a solution to this issue? The issue itself isn't fatal, as the VM runs ok regardless. TIA for any light, and sorry if this issue has been solved before -
Cheers, Rolf

 

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On SuSE 10.0 host I have a "/dev/rtc" and it is not linked to anything, the owner is root, and the group is audio. The permissions look like rw-rw----, and my XP VM works without error.

Don't know if that helps, but I thought I'd share anyway.
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That works for me. Had the error message, added 'audio' to the user, and the message went away.