I have the same problem on 12.04.1 LTS. I have an Laptop screen and external monitor with Launcher Placement to Laptop and the sticky edged button on/off has no effect. Then I temporarely changed Launcher Placement to All Displays and then back again to Laptop and now the edges are finally not sticky anymore...
I have the same problem on 12.04.1 LTS. I have an Laptop screen and external monitor with Launcher Placement to Laptop and the sticky edged button on/off has no effect. Then I temporarely changed Launcher Placement to All Displays and then back again to Laptop and now the edges are finally not sticky anymore...
Seems like a bug to me!