Is anyone experiencing the same problem as me? I can run Terraria just fine (well, I can run almost everything just fine, that's not the issue really), but the window "flickers" and seems to lose focus every few seconds. For a split second, I can see the wallpaper and the screen moves a few pixels up and down. The game icon is doubled in the taskbar, but the oldest one disappears after a couple seconds. I can keep on playing without any further complication, but the effect is rather annoying.

For reference, I'm running a Windows 7 Home Premium x64 PC, with a GTX 460, Q8400, 4GB RAM 800MHz. The game works perfectly in my ASUS i3 laptop, though.

Your RAM is at 800MHz?

Your RAM is at 800MHz?

I blame your 64-bit OS, I'm running 32-bit Vista and it's working fine (and my comp is a piece of shit)
 
is there any sort of 32-bit compatibility mode?

I blame your 64-bit OS, I'm running 32-bit Vista and it's working fine (and my comp is a piece of shit)  is there any sort of 32-bit compatibility mode?

I'm playing it on Windows 7 64-bit with an nVidia video card with no problems.  However, my drivers are months old now and I don't use Aero.

Works just fine on my windows 7 (64-bit) I don't even have a video card.. Just a chip set. 

@JoeyRavn: you don't hear of many games MADE to run on an AMD, lol.  Anyways, I have an old Geforce, so that might not be the issue.  I don't have Aero enabled since I'm using the basic Vista, so that could have something to do with it?   Sounds like an odd bug for a game to have, though.