The firefox extension checks if there is Firebug installed and logs certain messages in the firebug console. My console has enough other things in it and it is very annoying to have stuff I didn't ask for in there. Can this behavior be turned off, I mean, without me hacking the extension javascript code?
After installing the extension on Firefox -2 or 3 doesn't matter - I get the following error (in javascript console): this.matrix[A.prefs.val("server")] is undefined in diigo.urls.js
Seems to be some obscure cache issue because A.prefs.val("server") evaluates to "alpha" and matrix only has the following objects in it: "cn", "preview", and "www". Copying matrix.www to matrix.alpha solved to problem for me but... this may be something developers would like to look into.