work today
./cpuminer -a X15 -o stratum+tcp://mine.zpool.ca:3733 -u VDPG63qruJXpC9QMYANDdBmy9RWZ5gWcPv -p c=VRC -t 4
work yesteday - ok
amazing stability ))
I'm mining with X15 as well and don't see any issues... Has there been any problems with your connection?