ok, i just rebooted my n900 because it was slow, web browser hang up and transmission torrent software was veeeerryyy sloooow.
when my n900 booted, i tried to start transmission from others menu but then i noticed something weird, main menu and others menu was opened together, layered.. others menu was top of main menu and i could only move others list and see main menu on background. then i noticed that desktop was zoomed out... everything was pretty small..
then i rebooted again and now it was ok but when i started transmission, program said i do not have write permission.. then i looked my files on my phone and i noticed that documents, camera, pictures, video and sound folders was duplicated and i don't have write permission at all... only read permission in whole memory