We just moved a new MPMU site to Slicehost and it seems pretty good.
Last night though I got an automated email from Slicehost saying that I have having memory issues:
This is an automatic notification to let you know that your slice is showing a considerable amount of consistent swapping activity. Quite often this is an indicator that your application or database are not as efficient as they could be. It also may indicate that you need to upgrade your slice for more RAM.
We are using a vanilla WordPress MU 1.5.1 install on a Centos build. And the very scary thing is that we were not even taking hits at the time.
I think that the Slicehost automated service may have just identified a memory leak / problem with WPMU?
If there is a master MU guru out there that wants to take a look at this for us I'd really appreciate it.
Ciao,
Dan