Dear
I've just installed rc1 on a domain of myself (oostvlaanderen.net) but i wondered why there aren't any images there yet saying something like new message of whatever?
Anyway, take a look at the screenshot :D
Its a permission problem, the images are there but there aren't loading. If you go to http://webmail.oostvlaanderen.net/skins/default/images/roundcube_logo.png then go to back to roundcube you will see the logo. I do not know what is making this happen, it might be a hot linking problem. Hope this helps ;)
Indeed, i've uploaded the images so i really don't understand why it isn't working.
What do you mean with hotlinking problem? All the images and the roundcube script are at the same server so i don't think that would be a problem?