Thank you for your quick and helpful reply. A few quick checks make it appear that reinstalling libssl as you suggested has completely resolved the problem.
Thanks also for your suggestion about checking failing hardware. There seems to be no sign of any errors in my drive, but I'll continue to test the drive and my RAM. Perhaps it was just a stray cosmic ray. Thanks again and best wishes to successful bug smashing! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2063271 Title: Illegal opcode in libssl To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/2063271/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs