I have this weird issue with Gnome and diferent file types. For ex. if I double click on .avi file it try's to open it with document viewer (gedit i guess). And If I go right click>properties>open with> then chose Movie player.. then it opens .avi in Totem. But thing is after that it will try to open every file type in Totem ie. .txt .zip .. Its like it doesnt recognize and assign right aplication to file type. Any sugestions on this?