I just found out the hard way that keywords are no longer exporting correctly from LR2. 

Adobe is aware of the problem and has released this fix:
http://www.adobeforums.com/webx/.59b61fd3

thanks for the tip

Thanks for the link, I was eagerly waiting for Adobe's fix. I ran the script, and LR now seems to export keywords correctly.
Now, I still have to find a way to tell LR not to sort keywords alphabetically

I was just gonna post this! It took me 1 hour to find it! Man! Shows me to go on holidays for 12 days!