Bumped $wgCookieExpiration to 180 days, we were one of the sites with shortest cookie...

Bumped $wgCookieExpiration to 180 days, we were one of the sites with shortest cookie lifetime for too long. This was discussed at lengths about a year ago on wikitech-l, however nobody cared to implement the suggested alternative solutions. Probably because they were overcomplicated and solved only parts of the problem.