Thanks for posting about this here. I just checked in with our engineering team about the error you mentioned in your post and am pleased to report that we have some changes planned for an upcoming site update that should alleviate the problem, although I'm not sure exactly when that will be at this point.
Some of these XML parsing errors that have been reported were specific to a couple older versions of Firefox so, if anyone receiving these errors is not already using the latest version of Firefox (3.6.12), there is a possibility the errors can be alleviated by udating to the latest version of Firefox from: http://www.mozilla.com
If you need any further assistance with your account, please feel free to contact our customer support team by mousing over the "Help" tab within your account and selecting the "File Support Case" option.
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