When accessing a web page that is displaying a Lightbox, RDTabs refreshes the screen very slow (+5 seconds) I have tried all Display and Experience settings and the only 8 bit color setting seems to diminish the slow refresh. A Windows RDP session does not have this refresh issue. I have noticed this with both XP SP3 and WIN7 clients. Server is running Win2008 R2. IE does not have this issue. Not sure if this is related to FF or RDTabs, but bringing it to your attention. Feel free to contact me with questions.

I'm sorry, I don't know what a "lightbox" is. Can you please explain? I don't use firefox, but if it has a way to do off-screen compositing, that would probably help any slow graphics problems.

Just so I understand, firefox is running on the Server 2008 R2 box? Is it server core or normal?