FreeBSD loses time when used in VMware

[Stephen Allen]

I run my FreeBSD installation in a VMware session, which I pause each
time I shut my computer down.  This means I have to reset the date/time
when I start it again.  However, the time seems to be running slow... it
takes about 1.5 seconds for a second to pass in FreeBSD.

I run a Gentoo installation too, which a) doesn't suffer this problem,
and b) seems to set itself the right time when I resume it from being
paused?!

Any ideas why FreeBSD time is running slow?

Many thanks,
Steve :)