I imagine Linux is pretty great but it's completely not my thing. Technology is not my geekdom of choice, I have little desire to customize or take anything apart - so I can definitely understand preferring Windows or Linux especially if that's up your alley.
I have used a mac for four months when working as an animator. FOUR months! What more do you want from me? Don't give me the old 'You didn't give it a chance' card because that crow won't caw.
Yes, Mac OSX is a very elegant system but unlike PC, you can't customise or replace parts off the shelves (bar the ram), running windows on a serter enviroment is a lot smoother, plugin utilities are almost non-existent on mac, and despite the way Apple keep promoting their products as 'virus free' it does have a shit ton of security issues (google it for god's sake).
I could go on further but I think that will suffice for why macs are not worth the absurdly high price tag, especially when you can get a PC that does a hell of a lot more than macs and cheaper in a lot of cases. So, you're entitled to your opinion but in mine (through experiance need I remind you), macs are not better than PCs.
Fair enough. I have absolutely no desire to customize beyond ram. I've never had a plugin or virus issue, although I imagine we use computers for very different things. My PC emulator is kind of ehn, but way better than any attempt at a Mac emulator I've personally seen done.
I wouldn't say Macs are better. I prefer their OS, but you're right in that they are no way in hell worth their price as far as what they do. But aside from willing to pay a bit more for sleekness, I mostly bite the cost because after a four year degree in graphic design I absolutely needed a Mac and it wasn't worth the compatibility issues and constant file converting of using a PC. But I'm glad you did dick around on it. I'm tired of the stereotype since I know a lot of people moan without touching the things just because of the pricetag or the asshat that was Jobs.
Oh, and command [TAB] (but keep holding command) should change the active program so that you can activate the program that's displaying the image, so that you might be able to close it without drastic measures.
command W should close the active window or command Q should quit the application that's displaying the image. unless you're in some funky program utilizing full screen features, the system bar should always be at the top of the screen, displaying menu options and indicating which program is active. Full-screen mode can often be toggled via [fn]+f11. if some sort of funky funky program is running, you can always enter System Monitor and "kill" it. You can always find this by pressing command [spacebar] (spotlight search should pop up in the upper right) and start typing in "system", then run System Monitor.
Any of this help? I've never encountered a nightmare window that was too large to resize or move. Wish I could be there to help in person to get more of an idea what's going on.