[billyo]

this might not help you, but did you do all the recommended changes before you did the upgrade?, i just now upgraded my back-up laptop to 4.11 and did the changes prior to upgrade, and i have no problem except i had to just change the playback offset.are your speakers daisy chained or have them on a sub-mix..check your board, the music side might be panned to the right and the mic might be panned to the left..i dont use Behringer so i dont know how you have yours set-up..