Since updating to Ubuntu 12:10, I've had a long string of difficulties running my Steam games on Wine. I've also found it impossible to set Wine to update the upgrade to 12:10. Upgrading to Ubuntu 13:04 didn't solve the problem. What I discovered when I tried to manually install the Wine repositories is that Ubuntu cannot find any valid security keys for the new Wine repositories. Can someone look into this issue and into the general difficulties that I've encountered running Steam games on Wine since uprgrading to Ubuntu 12:10.