Not that it's a huge
issue or anything, but...
Here's how the MySpace Mobile page appears on the 4.3 browser. Things are centered like they're supposed to be:
Now, here's how the same page appears on the 4.5 browser. Things are still centered, but they're way off to the left:
Now, it very well could be an issue with the MySpace site itself, as they're not known for reliability or quality.
I just found it odd, nonetheless.
I've had a great deal of fun playing with the 4.5 betas, but I've decided I'm going to stick with 4.3 until a good final release of 4.5 is issued.