I noticed the following question in another thread:
BTW, has anyone else experienced problems with HTML-editing wiki pages in Firefox?
The screen flikers, and whilst I can save an initial entry, when I come
back later it ignores subsequent changes I make. The problem disappears
in IE or if I change the option to safe HTML, and use good old
webforms. Firefox HTML editing works OK elsewhere.
I have exactly the same problem. Firefox v1.0.1, moodle 1.4.3.
Does anyone know of a fix? (I'm very attached to using Firefox )
Same prob over here .. haven't heard of a fix yet