Dear All,
A user process failed a core dump, which resulted in a cascade of errors, causing the connection node to freeze.
The user in question has been contacted and reminded of the impact on the community of running jobs on the login node. I also forwarded the three forum posts concerning this issue to the user.
The login node was restarted at approximately 9:55 AM and is now available again.
I apologize for any inconvenience caused.
Best regards