International Space Station Status Report: SS05-023

Commander Sergei Krikalev and Flight Engineer John Phillips are moving full speed ahead into their Expedition 11 maintenance and science work aboard the International Space Station.
Krikalev replaced a liquid processing component of the Russian Elektron oxygen generation system yesterday. It failed almost immediately prompting additional troubleshooting today.
http://www.nasa.gov/home/hqnews/2005/may/HQ_ss05023_ISS_status_report.html