Kind of common with VPS's that run OpenVZ. I believe Virtuozzo uses OpenVZ or something similiar.

I would submit a ticket to your provider letting them see your output from TOP. Let them know that it does not appear that you are using much memory.

Then cat your user_beancounters and include that. I would assume that you are exceeding something there.

Make sure you include this info to them.

Code:

cat /proc/user_beancounters

Code:

free

Code:

ps aux | awk '{sum +=$4}; END {print sum}'