If Lotus Notes Webmail (Domino) isn’t working for you, because you use Firefox you can easily fix it using 1-2 tricks.
Initially it might look like this:
First trick: try activating the “lite” mode, by appending “&ui=dwa_lite” to you URL. It may fix the view for you.
Second trick: If you can see your folders now, but no emails, try installing the Firefox XUL Plugin and whitelist your domain. A Firefox restart is not even required for that.
Afterwards it should look like this:
