"pgbench -c 13" causes backend hangup.

Hi.

I've found a problem about PostgreSQL and cygwin.

1. run postmaster
2. run "pgbench -c 13" (This option means test with 13 connection.)
3. pgbench never finishes ,because some backends hangup.

Are there any workarounds about this?

software versions:
 Windows 2000 Pro.(with SP2)
 PostgreSQL 7.1.3(compiled by me)
 cygwin 1.3.3-1(binary)
 cygipc 1.09-2

--
Yutaka tanida <yutaka@hi-net.zaq.ne.jp>