Lot of "calcru: runtime went backwards" errors when rinning under VmWare 5.0

Hi,

I wonder if anybody has an idea what can cause lot of "calcru: runtime 
went backwards" when running 6.0-CURRENT under VmWare 5.0. I do not see 
any visible problems with this, but it is just quite annoying.

My timecounter-related oids look like the following:

kern.timecounter.stepwarnings: 0
kern.timecounter.nbinuptime: 27463623
kern.timecounter.nnanouptime: 0
kern.timecounter.nmicrouptime: 6261
kern.timecounter.nbintime: 2783660
kern.timecounter.nnanotime: 1086
kern.timecounter.nmicrotime: 2782573
kern.timecounter.ngetbinuptime: 15989
kern.timecounter.ngetnanouptime: 2834
kern.timecounter.ngetmicrouptime: 3417463
kern.timecounter.ngetbintime: 0
kern.timecounter.ngetnanotime: 1
kern.timecounter.ngetmicrotime: 6645
kern.timecounter.nsetclock: 5
kern.timecounter.hardware: ACPI-safe
kern.timecounter.choice: TSC(800) ACPI-safe(1000) i8254(0) dummy(-1000000)
kern.timecounter.tick: 1


Regards,

Maxim

calcru: runtime went backwards from 16430817 usec to 16430811 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 17253868 usec to 17253844 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 45697023 usec to 45697017 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 72251267 usec to 72251261 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 74393888 usec to 74393882 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 75331894 usec to 75331884 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 81173048 usec to 81173046 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 83591856 usec to 83591850 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 85953778 usec to 85953772 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 129215402 usec to 129215396 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 130114935 usec to 130114930 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 175756138 usec to 175756132 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 177168820 usec to 177168814 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 189821362 usec to 189821327 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 191069009 usec to 191069003 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 191207231 usec to 191207225 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 195724967 usec to 195724960 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 219595821 usec to 219595815 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 222284948 usec to 222284942 usec for 
pid 592 (vmware-guestd)
calcru: runtime went backwards from 223661139 usec to 223661133 usec for 
pid 592 (vmware-guestd)