Testcase in WYSIWYGVerbatimLinefeedsAreDoubledInIE
This is on IE 6, firefox is OK.
For some reason the Sarissa serialisation puts in ^Ms with IE. When the topic is sent back to the server the ^Ms in PRE sections are converted to LFs by CGI (?) and we end up with twice as many LFs as we wanted. The easiest solution is simply to strip all ^Ms before submission.
I wonder, where did you learn to speak Yoruba?