We been using Roundcubefor a while now, and while its GUI is near perfect its a real drama that attachments are corrupt when opening them. Somehow i got to find some time to dive into that code and solve is as i’m not the only one suffering from it looking at the forum. It looks like a problem between beta1 and beta2 and some users reported solving the problem by setting their preferred language to English … i can’t solve it that way 🙁 The client performs outstanding other than the attachments, including all kinds of web2.0 gadgets like drag/drop and multiple from addresses. Take a look at their site!
A workaround has been created for getting the attachments by still using SquirrelMail and now also testing IlohaMail. While functional and performing very well there not as 7334 as Roundcube 😛