Steps to reproduce:

If PostgreSQL connection time is more than 10 sec (happened to me on a highly loaded box) pgsql.ping.time becomes unsupported because of regex mismatch:

Result:

Oct 24 09:37:59 slave zabbix_server[33185]: item "vdev3.deepsine.net:pgsql.ping.time["\{$PG.HOST}","\{$PG.PORT}","\{$PG.USER}","\{$PG.DB}"]" became not supported: Preprocessing failed for: 1.Time: 11.113 ms 1. Failed: cannot perform regular expression "Time:\s(\d.\d+)\sms" match for value of type "string": pattern does not match

Expected:
See attached patch file...