Twin monitor oddness

Greetings - i've finally taken the plunge and gone Vista after many yeras of XP. I've got something odd happening with my setup. I run 2 screens 4x3 on the left and 16x9 on the right running in a dualview mode, and i use an application that opens fully maximized accross both screens. Until yesterday i was running in "classic xp windows mode" but decided that i should try the aero thing out, only to find that the said application now starts up with a small border along the right hand side and along the bottom. The application thinks it's maximized as the window is locked in position and if i minimize and then maximize again the application spans both windows correctly. If i switch to Vista Basic instead of Aero it works as it should, so there something in the aero setup that giving me ths odd border.

I know there are a few threads regarding maximized window problems bu tnone of them seem to match my specific case.

Any clues anyone might have would be much appreciated.

cheers,

Hackney.

Just to answer my own question in case anyone else has a similar issue, i never found what caiused it specifically, but i managed to rectify it by switching the dualview off and running one monitor, and then switching dual view back on - and now it behaves..... wierd.