The symptoms were:
- Sun JDK jarsigner freezing
- ssh no longer working
- Applications using crytography broken
So what the fuck…
strace jarsigner ...
Looks like /dev/random is empty ! How can /dev/random be empty ?!
man 4 random
Ok so my entropy pool was empty and I just rebooted to full it up. I think it happened because of a previous kernel crash.