I couldn't remember for a while whether is was before or after, but the more I thought about it I realised it's before I press the button. Even if I get in early & it appears to make the choice or the button is clicked but it still sit's there unchanged with the spinning beachball. After some time, it stops spinning ... & if I got in early then that choice was remembered. I've noticed this since the later 4.1 betas. And like Stief said, it generally happens after LW's been running for some time.
But then again .. perhaps it's both ways. I just did a bug report & when I pressed the OK button to close the window, it set into a spinning beachball ('after' I pressed it.) lol Whereas a some days ago I did a bug report & before I could press the OK button it went into a spin; ie: as soon as the bug report window came up.