Hi, I run squid as a non-daemon process, with the following command-line: /usr/sbin/squid -f ~/etc/squid/squid3_sbaddah.conf -N -u 0 Sporadically I find squid aborting with; Aborted (core dumped). I've attached the last stackdump for this. Running addr2line against both cygwin1.dll and squid.exe, I get the following backtrace: /usr/src/debug/cygwin-1.7.29-2/winsup/cygwin/exceptions.cc:765 /usr/src/debug/cygwin-1.7.29-2/winsup/cygwin/exceptions.cc:1463 /usr/src/debug/cygwin-1.7.29-2/winsup/cygwin/smallprint.cc:205 /usr/src/debug/cygwin-1.7.29-2/winsup/cygwin/sigproc.cc:324 /usr/src/debug/cygwin-1.7.29-2/winsup/cygwin/sigproc.cc:1159 /usr/src/debug/cygwin-1.7.29-2/winsup/cygwin/sigproc.cc:1065 /usr/src/debug/cygwin-1.7.29-2/winsup/cygwin/sigproc.cc:255 /usr/src/debug/squid-3.3.3-1/src/debug.cc:565 /usr/src/debug/squid-3.3.3-1/src/store_swapout.cc:308 /usr/src/debug/squid-3.3.3-1/src/fs/ufs/UFSStoreState.cc:347 /usr/src/debug/squid-3.3.3-1/src/fs/ufs/UFSStoreState.cc:140 /usr/src/debug/squid-3.3.3-1/include/RefCount.h:90 /usr/src/debug/squid-3.3.3-1/include/RefCount.h:90 /usr/src/debug/squid-3.3.3-1/src/fs/ufs/UFSSwapDir.cc:509 /usr/src/debug/squid-3.3.3-1/include/RefCount.h:77 /usr/src/debug/squid-3.3.3-1/include/RefCount.h:60 I can see that this is due to a failed assertion in store_swapout.cc: assert(e->swap_status == SWAPOUT_WRITING); I haven't really taken careful note of every crash, bit it seems that most of the aborts happen after my laptop comes out of a sleep. It's not a big problem. The crashes aren't too frequent. But thought it might help to have it reported in case it offers clues to more serious issues. -- Regards, Shaddy