Problems observed in qTranslate during independent testing:
1. The post editor does not save your work if you started it in HTML view.
2. Autosave is broken if the post editor is started in HTML view.
3. There is no way to edit tag translations.
4. All dates are wrong in comment feeds.
5. Home page links are sometimes missing slashes, creating duplicate content at paths like /de and /de/
For patches and workarounds, please see http://www.qianqin.de/qtranslate/forum/viewtopic.php?f=3&t=1271&start=70