I've noticed with RC1 if a pop-up window opens up it resizes my main window to the size of the pop-up (I have preferences set to always open a new tab).
An example would be going to maccentral.com and then clicking on one of the news items, this happens:
![](http://i2.tinypic.com/264rofr.png)
An example would be going to maccentral.com and then clicking on one of the news items, this happens:
![](http://i2.tinypic.com/264rofr.png)