When you send a picture and you push "view" (the image you send), opens the Image Viewer but also opens the image with Opera (i have Opera installed, don't know if someone just have microb, don`t have installed firefox).
Also found a minor encoding issue: When a group name contains umlauts (ä,ö,ü,...) they are not shown correctly. In previous versions that was not the case. However in a normal chat window everything is fine, so its no big deal.