While I was working with Blender a few days doing the light volume data for the flaslights; I've noticed that in Blender 2.49 Loop cut kept the UVs correct, while in Blender 2.6x it gets stretched. This was annoying. Even after downloading Blender 2.64a, I saw this problem still persists.
A quick google returns a cryptic solution saying that it's not a bug and can be turned on & off. Because I prefer visual solutions, here's how to turn it back on:
Go to the User Preferences (Ctrl+Alt+U; alternatively "File->User Preferences..."), then to the Input mapping options:
Then find the "Loop Cut and Slide" key binding:
Quick fix to a very annoying problem. I hope this visual description helps a lot more than that cryptic message over the bug tracker.
Note that apparently there may be a rare bug in which Correct UV may completely screw up your UVs which may be the reason the default was changed to unchecked in the first place. That seems to be something much harder to solve and the developers are working hard on fixing it. Keep an eye if that happens to you. You've been warned.
That's all for today! Have a good day. Now back to work.