Typing in TinyMCE editor is painfully slow#

I have a site in 2.0.8 that when I type using the TinyMCE editor on a page is very slow. I type one letter...wait a couple seconds....type another letter....wait a couple of seconds....

Has anyone experienced this? Of the 30+ sites I have in MODX, this is the first time this has happened. Clearing cache and flushing permissions don't work. All the code validates...

Help is appreciated.

Could you tell us more about the environment, what browser your using, etc?

AFAIK, that's all done with JavaScript, which executes on your local machine. Whenever that happens to me, it means that my machine is running short of memory or the batteries in my wireless keyboard are getting low.

If you have any browser plugins enabled (e.g., FireBug) or have an aggressive antispyware/antivirus program, that could also be a factor.