ssh stops working after a while on BBB

Hi All,

I’ve got a BBB with the default angstrom installed. It boots fine, and I can ssh into it, but after a while it stops accepting new ssh connections. After a while longer, any open connections will die. I can still ping it, so it is running. Avahi appears to also be working fine, because I can resolve beaglebone.local.

Does anyone know what is going on here? Is this a dropbear issue? Should I try and install openSSH instead?

Thank you,
Grady