Please provide details. What's slow? The web site? The API? Are limit orders being accepted but not showing up in the market depth?
The site does not respond at all (browser hangs waiting / and or "MySQL errors, please try again" message) several times a day. Any frequent user would have noticed. I also know at least one person here who mentioned it in a PM.
Just did it again a few minutes ago, lasting for at least a couple minutes....
Anyone have info on the cause?