[ic] Dead 5.2 in RPC?

[Bob Puff]

Hi Gang,

I recently had some significant trouble with a 5.2 cart and 
authorize.net duplicating charges - it would tell the customer the card 
was declined, when the charge really did go through.  In searching the 
archives, the only solution I found was to use RPC mode (I have been 
running several carts on this same box in High setting for years, no 
problems).  Two days after I switched to RPC mode, interchange hangs 
up.  I had to kill -9 all the ic processes, and restart.  I saw no 
errors in any of the error.logs that warned of any problems.  It didn't 
appear that my box ran out of memory, as top reports about the same 
memory usage as before the switch.

Where can I look?  Obviously, a lockup like this is not a good thing!

Alternatively, if there were a fix for the authorizenet problem, I may 
want to implement that, and go back to High traffic settings.

Bob