4.3 random reboots on Soekris 4501

[Mohamed Hussein Sayed]

Hi,

I have a soekris box that I have been using as my firewall/access point 
for many years. It used to be an older no longer supported release. I 
wanted to bring it up to 4.3 so I could upgrade to 4.4 in November.

The machine in the past has been rock solid, no issues whatsoever. I did 
not upgrade, I did a complete install on a new cf card, migrated my 
relevant policies and config files.

I have been experiencing some worrisome behavior: The machine randomly 
rebooted 3 times since Saturday. I also lost my ssh session randomly.  I 
looked in the logs and don't see anything that stands out but perhaps I 
am not looking close enough. I wanted to check if anyone has experienced 
similar problems. Is there anything I can do to further debug the 
issue?Can I change the behavior of a potential crash ?

Regards
Mohamed