First and foremost this is a TV and not a PC monitor. Don't expect it to work seamlessly as a PC monitor.
1. It can take 5 seconds to sync a PC's signal. While it's doing this, it's flickering the panel, shifting it left and right, etc.
2. If you deal with multiple resolutions/frequencies daily, you'll end up either using the AUTO button when the screen doesn't sync properly or when that fails, powering it off then back on.
3. As posted elsewhere, it does not conform to PC Energy Star standards. This means when your PC shuts of it's video signal, the LT27HV flips to a solid blue screen with either VGA or DVI in the corner. This means if you want to be safe with it, you need to manually turn it off when you walk away.
However, because your PC will likely be at the screen saver when you return and turn the TV back on, you'll get a fuzzy off-center image. Log in, then once the desktop is stable, Press AUTO or turn off the TV and back on. That'll sync the image and give you a superb picture (until the next res/frq change).
For some examples. Desktop is at [email protected]
I play Half-Life, CounterStrike, Diablo 2, Dungeon Siege, BattleField 1942, Quake 2 (oldie but goodie). None of those support 1280x720. Closest is 1024x768 and it gets stretched. However, the TV can't sync it correctly without being reset (AUTO) or turned off and back on. Then when you are done playing, you have to reset again for your desktop.
On top of that, many of the newer games (HL2, Doom3, UT2004, Unreal 2, etc.) have videos at the start (usually about the developer, publisher and whatnot). None of those run at 1280x720, even if the game is set for 1280x720. So again, you need to manually sync the screen.
These two glaring issue have resulted in me returning the LT27HV after 5 days of use. Syntax confirmed via email that this should not be primarily used as a PC monitor and that excessive sync'ing will cause premature failure.
Just thought I'd pass along my experience before someone else walks in to a purchase like I did expecting something more than what they'll get.
I'm off to order that 2405FPW. I hope the first runs don't have problems...