u don't even know the architecture ? please think this over before installing... anyways , n900 uses an arm processor , so you should install armel... i don't understand what probelm u have with removing files in whatever directory . well , to remove any file , rm <filename> , ex . to remove a pic inside MyDocs , u will write rm /home/user/MyDocs/<picname> if u want to remove a directory u will add -r to the command , doing rm -r /home/user/MyDocs/.images will delete the images folder . u should now be able to delete whatever u want... if u understand u should be able to tell what does the following command do if u are root ? rm -r /* u are not advised to try it .