I didn't see this anywhere, but it happened to me and took me about a half hour to figure out, so I thought I'd drop it in for anyone else that runs across it.
Salesforce supplies some boilerplate tracking code that is enclosed between these comments:
<!-- Begin Salesforce Tracking Code, place immediately before closing </BODY> tag -->
<!-- End Salesforce Tracking Code, place immediately before closing </BODY> tag -->
PageLime's CMS editor would hang during loading permanently (well, presumably - I didn't wait for the end of time) and when I finally got to that chunk of code in tracking down the culprit and removed it I realized it must have been reading the commented </BODY> tags and getting caught up in some kind of logical issue.
So, if anyone else has this problem with goofball Salesforce code gumming things up (why else would you include a commented out </BODY> tag in your code?), there you go.
