I was just notified that my site, www.ozmafans.com/forum uses a lot of memory on the server. I believe the server is a Dual Xeon, and I am sure it has at least 512MB of RAM. How can we use so much memory that we get notified, when the most people ever online is only 30?
Ask your host how they arrived at that conclusion.
With 350 online in the past 30 mins heres my memory usage
total used free shared buffers cached
Mem: 1008 847 161 0 47 333
-/+ buffers/cache: 466 542
Swap: 2047 269 1777
[edit]
It's the 466 MB line you want to look at. Ask your host how they conclude your site is using lots of memory and ask how much.
Never noticed SMF using much, is your host a small or big host. Small host bite the bit over memory usgae where big hosts wouldnt dare complain as they see it as there problem not yours.