Jeff ~ I've only seen this error once or twice... and it is exactly what it says it is, usually the problem is the log being written to a the same time that it is being loaded to be read. That bug shouldn't happen, but there is a larger issue.
What errors are being written to your log so frequently that this error is recurring for you? I would focus on trying to find out why you are receiving so many errors that you see this problem so often. You can always download the file and use an XML editor to view it.