Low /proc/sys/kernel/random/entropy_avail causes exim to stop sending mail

Hi  there,

I'm using Debian Sarge 2.6.17.7 64bit as host OS with a Debian Sarge 2.6.17.7 32bit as guest OS. Now when I cat /proc/sys/kernel/random/entropy_avail I see a very low value. The highest I've seen is ~60, which is way to low (my host is showing ~3500!)! This is so low that Exim can't produce any TLS an stops sending mail...

Anyone knows how to fix this in vmware?

Thanks,

Sander