When you pause a VMWare Fusion virtual machine on a Mac OSX host and resume it after a long time, your system clock will sometimes be behind.
ntpd won't catch the clock up if it's too far behind. One manual solution is to run ntpdate in the guest operating system once the virtual machine unpauses:
sudo ntpdate pool.ntp.org
Another approach which I am currently trying, is to set your
clocksource to use
acpi_pm instead of
tsc. You can check which clocksources you have available with: