Definitely a drain.

LOL!

They should look at AdCenter in Firefox. A scroll bar is necessary since everything is jogged to the right.

adCenter Upgrades [adcentercommunity.com]

The first thing you'll notice when you sign in to adCenter is a new look and feel. You'll also notice some new features, so check out our detailed feature review blog posts for further information. Improvements include:

Campaign Management: ability to pause and resume ads and keywords, geo-targeting enhancements, and improved performance reporting on the Ads page

Editorial Improvements: faster reviews, dynamic feedback about why ads and keywords were disapproved, and inline notification when dynamic text causes your ads to exceed character limits

User Management: if previously you were only able to have one user, now you can create multiple account users
Content Ads (U.S. only): get keyword bid suggestions and performance estimates for your content ads

I think still a lot has to be done. For example the whole interface itself is boring to start with. Speed is another issue. Open Adwords in a tab and Adcenter in another and do the same exercise in both - the difference is visible. Still a drain - but cleaner!