I haven't changed any code regarding the comments, and I can still view them fine. However, I cannot view them on my desktop machine, so I think there is some inconsistent behavior in XmlListModel across Qt installations. It seems that setting the source property of the XmlListModel does not work in some cases, whereas setting the xml property (a string) always works. The comments list is now the only case where the source property is used (it was previously used for playlists and subscriptions, where some users also had problems). I will change it to use the xml property for the next release.

As odd as it sounds, the problem can only have been caused by disabling OpenGL acceleration, since that was the only significant change from the previous version.