Adam,
we installed the complete cutesoft sample .net 2.0 from the latest version on a local iis (xp, all patches, testet with ie 7.0) on different computers, without modifications from us.
With the default demo page of the sample we have a delay by enter characters. This delay is bigger in the second "new" window, but not so extremly slow as in our complex application.
Another Effect: If we press continously a button, the characters are shown in editor windows after unlock the button but not continously. This effect is not in the first window - the characters are shown continously.
We have no idea what we can do to improve the performance ... Its only a problem if we browse with ie 7.0 not with firefox 2.0!
regards chris