Since upgrading to LS 3.x we've been getting intermittent 503 errors when trying to access the LS admin area. We're currently running LS 3.1.1-ent on one server but also get it with the latest standard version on another machine. In general we've also found the admin takes much longer to appear first time with v3.x (which I guess is due to some of the YUI JS libraries). The 503 admin errors don't seem to affect the websites, but I do have to manually restart LS from the command line before I can get back into the admin. I find once I have the admin up I don't get the 503 errors while I'm logged in, it just seems to be the initial request before logging in. Finally, it only seems to happen about one in three times I access the admin. I don't really know how else to go about finding the root of these problems. Any suggestions? Platform is CentOS 4.2 on both machines. One box is a dual cpu (with the LS-ent) and the other a single processor.