I just installed 1.5 and notice the links were now underlined, overriding the browser settings. That was fixed by a user preference change. When trying to change the site default for new anonymous users I was able to set it to "Never" or "Always" but had a problem when setting it to "Browser Setting". It acted like the "Never" option instead.
To make the change I added the following line in LocalSettings.php:
$wgDefaultUserOptions['underline'] = 2;
I guessed by looking at some code that 0=Never, 1=Always, and 2=Browser Setting. Is this documented anywhere?
When using 2 as the setting and creating a new user the default did show as "Broswer Setting" in the Misc Preference but it still wouldn't underline the links even with the browser set to underline. I have tried multiple times by resetting the cache and with control-shift R (in Mozilla) but it still doesn't underline. It change from underline to non-underline fine when I changed between Never (0) and Always (0) so I don't think it is a cache problem.
Does anyone else have this problem or know a fix?
Tim