I've narrowed this problem down to the IMON resident scanner. I'm using the trial version for the time being. Win XP - 3Ghz 1G Ram AT&T Yahoo! 6MPS DSL service. Every forum, including this one, will give me an error message when manipulating certain threads. Sometimes editing a post, sometimes a new thread, and sometimes in the quick-reply. Usually it is a command not recognized or 404 error or something similar from the forum software/host. Once IMON is shut down - no probs. As soon as I start it back up, same thing start happening. I could not find anything specific to this in the search feature... any suggestions?