Problem re-sizing FSX in windowed mode over 3 screens

Hi everyone

Hmmmmm .... this is an interesting one and just wondered if anyone else has experienced this recently ..

I am using a GTX 670 NVidia card with the latest driver installed and for some reason I cannot resize FSX completely over all three screens

I get the usual 'double headed' arrow when I place the mouse cursor at the edge of the window but when I try to drag the window out over all three screens it will only go so far and stop ....

Everything is fine when I am in 'Full screen mode' but I use FS Commander so I need to run the simulator in a window .

Just for the record ...I have just noticed that it isn't isolated just to FSX

i tried to resize 'Notepad' over the three screens and the same thing happens

Never use to have this problem ..... I just wonder if it has anything to do with the new NVidia driver

If anyone has any ideas on this or indeed expereinced this themselves I look forward to hearing if you have a solution

Happy New Year everyone

Regards

Paul