spacewalk
'full-time ISS crew to make repairs later'
Have they done a spacewalk from the ISS without the shuttle around before?
The astronauts of the space shuttle Discovery have completed the second spacewalk of the two-week mission to the International Space Station (ISS), and are preparing for the third. During the spacewalk, one of the crew discovered metal shavings inside a rotary joint on a solar array. The joint is needed to allow the panels to …
'full-time ISS crew to make repairs later'
Have they done a spacewalk from the ISS without the shuttle around before?
Yes, quite a few: from Wikipedia, 4 on Expedition 3, 3 on Expedition 4, 2 of Expedition 5. The shuttle doesn't visit that often.
66 from the ISS as against 28 from the Shuttle.
There's a critical one next month that has to be done after the Shuttle leaves. The Shuttle's docking adaptor will be removed and fitted to the recently delivered Harmony module. Which also will be moved to where the docking adaptor used to be.