Upgrading squid 2.5.14-1 to 2.6.1-2

[nx13464a <nx13464a@net.vodafone.pt>]

Upgrading from squid 2.5.14-1 to 2.6.1-2:

Restarting Squid HTTP proxy: squidFATAL: Bungled squid.conf line 30:  
http_port 3128, 80
Squid Cache (Version 2.6.STABLE1): Terminated abnormally.

Restarting Squid HTTP proxy: squid2006/07/10 15:39:39| parseConfigFile: 
line 1658 unrecognized: ' httpd_accel_host virtual'
2006/07/10 15:39:39| parseConfigFile: line 1659 unrecognized: ' 
httpd_accel_port 80'
2006/07/10 15:39:39| parseConfigFile: line 1688 unrecognized: ' 
httpd_accel_with_proxy on '
2006/07/10 15:39:39| parseConfigFile: line 1703 unrecognized: ' 
httpd_accel_uses_host_header on'

The "error" on line 30 are corrected but the others?
Can anyone help me?

Thanks