This will probably incite further off-topic posts, but Windows 8 isn't perfect, for me anyway. I have but one main complaint, and hardly anyone would even run into this issue. I use a 3 screen AMD Eyefinity setup. Basically, all 3 of my 1600x900 screens show up as a single monitor of 4080x900. AMD has Bezel Compensation that increases the resolution and puts blank space between the monitor bezel, so my real resolution is 5040x900. Modern UI's Start Screen does not in any way respect Bezel Compensation, and will, without any care, put app launchers and shortcuts right under bezel. No real setting to fix it either. I imagine NVIDIA's alternative to Eyefinity has the same issue. A cheap fix is to throw some useless icons under the bezel, but that's pretty silly (and looks even more silly when I go to multi-monitor mode). You'd think Microsoft would at least let you customize specific space borders between apps and categories for such a reason, but meh (Eyefinity is in no way new). My other lesser complaint is that I can't use Modern UI apps when I disable UAC. I can understand Store apps, but when I can't even listen to local music or change my user picture because the Modern UI file manager won't open... that's just silly (to be fair though, this is fixed in 8.1 (preview anyway)).
I don't know about the Eyefinity issue, but you most definitely should be able to run Modern UI apps with UAC disabled. There has to be another issue going on..
Nope; Modern UI stretches a small banner through the middle of the screen saying it can't run with UAC disabled. Just to be clear though, dragging the slider from Control Panel down to the lowest setting does not disable UAC (since 8; you might see no warning with general usage, but file transfers to/from Program Files for example will still flag). Setting the EnableLUA registry key to 0 does though.
Why don't you just turn that "feature" off? It seems like a really s**tty feature, honestly. Why would you want space that you can't see? And how do you expect Windows to know which pixels are visible and which aren't if the whole point of that feature is to make pixels which aren't visible on any screen?
Ok then only use it for gaming, not for desktop usage. It would suck for desktop usage under any operating system. Does Windows 7 aero snap know where to snap?