http://news.ninemsn.com.au/article.aspx?id=570416

The international space station's lone toilet is broken, leaving the crew with almost nowhere to go. So NASA may order an in-orbit plumbing service call when space shuttle Discovery visits next week.

That would be some service call

well It doesn't look like a plumber was sent up..
http://news.ninemsn.com.au/article.aspx?id=571798
After being rushed in from Russia, a toilet pump has been loaded into the space shuttle Discovery just in time for this weekend's liftoff to the international space station, where the lone commode is acting up