Yea something like 400MB.
No idea why it uses so much Memory, doesn't seem to be causing any problems though. I did a bit of reading on it, as long as it doesn't run out of allocated Memory it won't cause any problems. That and when players join the RAM usage bumps up, but once they leave it doesn't go down. And the longer it stays up it slowly builds up, apparently a restart a day is necessary if you hit the maximum allocated Memory. Let's not forget this is a Beta so shit like that is expected.
How much memory did you used to have allocated and what was the most you ever saw it get up to?