1. should not affect performance in any way.
2. edit D:\Development\Joomla\compojoom\com_cnotes\source\components\com_cnotes\models\forms\note.xml
and change the note field to type="textarea"

3. What menu are we talking about?

Regards,
Daniel

Daniel, thanks for such a quick fix, very much appreciated.
Regarding the menu, I'm talking about the actual Joomla mainmenu (usually at the top of a site's homepage, with the links to the different pages on the site). The site I'm developing is a membership site, so their are different menus that display depending on whether a user is logged in or not, their level, etc. I have a separate menu with different menu items for people who are logged in, and I would like this menu to display at the top of the page when a user is editing/viewing their notes (any page generated by the component). Right now, it always displays my mainmenu (the menu displayed to the public, i.e. to people not logged in). Is there a way to tell the component to display one of my other menus?

Also (and you can send a separate email reply if you like), do you do custom work? I like the cNote very much, and may be looking for a more customized version to fit our site even better in the near future. Would like to discuss.
Thanks!