nVidia dual screen application display issue

[Mrugson]

One of my users using HP Elitebook 8540p with nVidia Quadro NVS 510M has problems with some applications displaying on dual view. Main display is the laptop's screen (1366x768) and external HP screen is the secondary (1280x1024). The issue is that when for e.g. Lotus Notes window is moved to the external screen and user needs to open location menu from the right-hand side bottom of the window, if LN window is not maximized the menu appears on the laptop's screen (seems to be in the right place but on the wrong display), if LN window is maximized the menu is not showing (as probably outside of the laptop screen's area). All settings in nView Desktop Manager seem to be ok and set reposition dialogue boxes to application screen and disallow to be opened off-screen. I have installed the newest graphics driver I could find on nVidia website (260.99) but apart from better picture quality it did not change anything...

Can anyone please advise?