It was not a rumor, Izhmash themselves posted info about it on their Russian language website:
http://www.thefirearmblog.com/blog/2009/09/30/update-on-the-izhmash-bankruptcy/
It seems another company was petitioning the court to make them go into bankruptcy because they did not think Izhmash could meet their debts.
So not quite what the media was originally reporting - but they did have to defend themselves in court.