I, as many, have a page on MySpace (www.myspace.com/lapsusmentismusic). There's always been little niggles with MySpace, occasional "an error has occurred" messages, which I put down to shoddy Fusebox programming.
These days it seems the errors are occuring so frequently that the MySpace application is frustrating and almost impossible to use, without getting one of these errors. A large part of their problem lies in the success of MySpace and the huge amounts of traffic it generates. The architecture to support massive traffic volumes just wasn't there.
I found this interesting article that explains their technical woes and is a lesson to us all: http://www.doughughes.net/index.cfm?event=viewEntry&entryId=116