In article ,
says...

Jeff Findley wrote:
ISS isn't going to fall out of the sky anytime soon. If the crew does
leave ISS, they'll leave it in a state where unmanned vehicles can still
dock with it and perform reboosts (Progress and ATV can both perform
reboosts).

I do not wish to feed the bobbert, but what launcher does Progress
use? Are its current odds of success much better than those of an
unmanned Soyuz launch?

rick jones

Progress flies on Soyuz-U while Soyuz flies on Soyuz-FG. Both rockets
share "very similar" third stages, which is where the failure occurred
(gas generator of the third stage engine).

But given that similar Soyuz (launch vehicle) third stages have flown
well over a thousand times, chances are it's not a design defect. A
manufacturing defect seems more likely.

Source:

http://www.nasaspaceflight.com/2011/...ight-manifest-
following-progress-failure/

Jeff
--
" Ares 1 is a prime example of the fact that NASA just can't get it
up anymore... and when they can, it doesn't stay up long. "
- tinker