Connecting to UCLA_WIFI on Mac OS 10.4
Mac OS 10.4 users with Sophos Anti-Virus installed will experience an error when attempting to connect to UCLA_WIFI using Safari.
Sophos is working on a solution for this issue. Please note that BOL recommends that all users connect to the Campus Wireless network using eduroam instead. If you still prefer to connect using UCLA_WIFI, you can work around the above issue by opening a non-Safari web browser manually and visiting any website. You should then be automatically redirected to the UCLA_WIFI login page.
For further details and additional workarounds, please visit this Sophos article.