Not sure if this is an XP thing or a MUSHclient thing, but I've only noticed it in MUSHclient so far.
If I try to select a portion of text that is larger than what fits into my window, so that I have to scroll either up or down to get the selection to cover all of the text that I want to cover, the scroll goes into some kind of racer mood and scrolls all the way up or down the output window within seconds, and it can't be stopped.
This makes selecting larger sections of text awkward, I usually have to scroll up to the top of the text and then select from the top and down so that I can trim out just the extra stuff it grabs beneath the text section.
If I try to select a portion of text that is larger than what fits into my window, so that I have to scroll either up or down to get the selection to cover all of the text that I want to cover, the scroll goes into some kind of racer mood and scrolls all the way up or down the output window within seconds, and it can't be stopped.
This makes selecting larger sections of text awkward, I usually have to scroll up to the top of the text and then select from the top and down so that I can trim out just the extra stuff it grabs beneath the text section.