In htop, I sometimes see lists of 64 processes, identical for all but the PID. What are they?
Solution 1:
Those are user threads (as opposed to processes), and you can hide them using the 'H' toggle in htop. See this explanation in its man page:
H Hide user threads: on systems that represent them differently than ordinary processes (such as recent NPTL-based systems), this can hide threads from userspace processes in the process list. (This is a toggle key.)
Solution 2:
The 60+ threads is a bug
with ConsoleKit.