eWebEditPro does not support FireFox 3
According to this Ektron knowledgebase entry , eWebEditPro is incompatiable with FireFox 3.
eWebEditPro is does not appear in Firefox 3.0. Do not upgrade to Firefox 3.0 . We will continue to monitor the development of Firefox and work with the maker of the Esker ActiveX plugin.
According to this post on the Ektron DevCenter forum, this problem has been known since early June. For now, Ektron recommends delaying the use of FireFox 3 until further notice. Subscribe to the RSS feed to be notified once this issue has been resolved.

July 22nd, 2008 at 11:16 pm
It’s hard to believe CMS vendors are still relying on ActiveX when there are such great opensource editor out there like TinyMCE and FCKEditor.