sticky arrow buttons on PC

[kwinkler]

I have constructed an application on the Mac that uses many "little arrow" buttons to increment and decrement various parameters. After compiling, the application works fine on a Mac. But on a PC, the "little arrows" are sticky. If you press one of them, they stay pressed and the parameter increments (or decrements) forever.

Any ideas why the PC would do that? I believe it used to work on my PC, but I don't know what I could have done to make the arrows sticky.

[kwinkler]

For whatever it is worth, the problem disappeared by itself. I didn't even have to re-boot. As IT support used to tell me, "PC's are like that".

[kwinkler]

Actually..........the sticky button problem has now re-appeared on a different PC. This one is a netbook running Windows 7.
The previous computer was a Dell laptop running Windows XP.

So I'm still open to suggestions.