I have an Alphastation 255/300 that basically just runs Squid.  When it was 
running 1.6 it was pretty solid but since upgrading to 1.6.1 it now, once a 
week or so, wedges in a state where it answers pings but doesn't respond to 
higher level protocols over the network or to the console.  This wedging seems 
to be kicked off at a point when its doing a "squid -k reconfigure" (at least 
it always seems to happen about 2am and the above is run from cron then).

Anyone have any ideas whats happening here or how to find out?

I noticed a lot of UVM and low memory related patches pulled up to the 1.6 branch
this morning, are they likely to help (the machine has 256MB and squid uses 
most of it).

cheers
mark