Re: Bug in tiki-user_menu.tpl
The other cause is also that Tiki is sending out too many Cookies. A single domain in a browser is limited to 20 cookies. Tiki uses many many cookies. For background info you can read CookieMonster, and its currently being fixed in 1.9 RC series and probably be backported to a 1.8.4 or .5 release when it works.