[Typo3] Unable to login to BE due to ZoneAlarmPro - solutions - which is better?

[Michael Baker]

I recently upgraded ZoneAlarmPro to version 6.0.667.000.
Since doing so I was unable to login to my typo3 back end.  I kept getting:

Error: This host address ("michael-baker.com") and the referer host ("") 
mismatches!
It's possible that the environment variable HTTP_REFERER is not passed 
to the script because of a proxy.
The site administrator can disable this check in the configuration 
(flag: TYPO3_CONF_VARS[SYS][doNotCheckReferer]).

I am my administrator and I could not disable this check until I loged 
in :-( .

Fortunately I found that when I unchecked "Enable Privacy for this 
program" for my webbrowser in the ZoneAlarmPro Control Center, the 
problem went away. :-)   
This is available in the ZAP Control Center  from Program Control | 
Firefox | Options | Filter Options

Then when I logged in to the BE I used Install to add the suggested flag 
to localconf.php. Now I am able to login with Enable Privacy for Firefox 
enabled again.

Does any one have suggestions as to the pros and cons of either of these 
methods.

Michael.