Latest update of the openssl package from CentOS breaks Parallels Panel 9.x. The following errors are displayed in the /var/log/sw-cp-server/error_log file when Panel is trying to start:

2010-03-29 11:21:22: (log.c.75) server started
2010-03-29 11:21:22: (network.c.336) SSL: error:00000000:lib(0):func(0):reason(0)
2010-03-29 11:24:33: (log.c.75) server started
2010-03-29 11:24:33: (network.c.336) SSL: error:00000000:lib(0):func(0):reason(0)
2010-03-29 11:24:33: (log.c.75) server started
2010-03-29 11:24:33: (network.c.336) SSL: error:00000000:lib(0):func(0):reason(0)
2010-03-29 11:31:29: (log.c.75) server started
2010-03-29 11:31:29: (network.c.336) SSL: error:00000000:lib(0):func(0):reason(0)
2010-03-29 11:31:29: (log.c.75) server started
2010-03-29 11:31:29: (network.c.336) SSL: error:00000000:lib(0):func(0):reason(0)

As a result the Panel is not working.

It is necessary to update Parallels Panel web-engine:

1. Download the appropriate package using the wget utility. Example for CentOS 5 x86:
#wget -c http://kb.parallels.com/Attachments/...ntos5.i386.rpm

2. Install the downloaded package. Example for CentOS 5 x86:
#rpm -Uhv sw-cp-server-1.0-6.201004011105.centos5.i386.rpm


For other OS Refer Parallels KB : http://kb.parallels.com/en/8338