WYSIWYG editor problem

Hi

I seem to be having a problem with the WYSIWYG editor on wordpress 2.3 the problem being it doesn’t show when you write a new post.

I have tried turning it on and off via the user profile button, clearing the cache, deactivating all plugins as well as using both latest firefox and ie but to no avail.

I tried to reinstall and it seemed to work but upon login in today to post it has again vanished.

I have noticed the problem people get with this in 2.2 and previous version but I have 2.2 running on several site on the same host all with no problems.

Any ideas as I can’t reinstall each time I want to post

thanks in advance.