I have updated to 4.4.5 some time ago. All has been fine in 4.4.4 and 4.4.5 until around 2 weeks ago, where this issue appeared. I keep my squeeze system updated almost daily. I tried creating a new user, just to see if it is something on my user's config, but the new clean user had the same issues. If there is any log or data I can provide let me know. Cheers, -- Marcos Raúl Carot Collins