Imported From: http://groups.google.com/group/in-portal-bugs/browse_thread/thread/820ab730e1988a9b#

In-Portal parses each url on a front-end (when mod-rewrite is enabled) into
a set of variables and stores them into cache.

However, when In-Portal encounters and url without theme/language specified
(e.g. /english.html or /advanced.html) it:

   - produces a warning, that m_lang or m_theme variable is undefined
   - parsed url is cached without language/theme id specified resulting
   such cache not reset automatically on language/theme data change.

Task:

Ready for testing.

*P.S.*:
Attached patch is actually a copy-paste from 5.2.0, where this problem was
fixed during large mod-rewrite system refactoring.

--
Best Regards,

http://www.in-portal.com
http://www.alex-time.com