Thanks to you both. Maybe the problem lies in qTranslate? Others seem to be having the same problem with the 2 plugins. The link below was a solution for many (so it may help someone, not me unfortunately).
http://www.qianqin.de/qtranslate/forum/viewtopic.php?f=4&t=3436
I managed a workaround by hiding the core editor and merging a couple of posts together (not ideal but it’s fine!).
