Solved. What I've done was the clean install[1]. But I don't know what did the trick nor the cause of the problem[2] after all. Performing rebaseall doesn't seem to do any harm in this installation.
Regards, [1] Rename c:\cygwin\ to c:\cygwin_old\ Install Cygwin in c:\cygwin\ using setup.exe Copy /usr/local and /home stuff from cygwin_old to cygwin [2] http://thread.gmane.org/gmane.os.cygwin/140753 -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple