The editor is really lovely but it just doesn't work in Opera 9,27
It has some flaws when used stad alone on nicedit web-site in opera, but when drupal module is used, it usually just locks the text area and all the related buttons/links (submit, rewiew, wiew html code, admin disable...)
of course, this can come out of some conflict with other js I use, but it's too hard for me to tell. anyway, this issue is found only in Opera, but as over 15% of my visitors use Opera, I can't use this module untill this is fixed somehow.

btw, the nicedit site contains update to 0.9b version