problem with excessive redirects

[SSOWorld]

http://tm.teresco.org/user/?u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=atsiatas&u=master_son&units=miles

http://tm.teresco.org/user/?u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=mapcat&u=new_friends_gr

The above appeared when attempting to access my data from any link (replace "atsiatas" with any other user name or "null".)

Resetting my cookies did not clear the problem.  It broke in Chrome and Exploder 11.

Further analysis leads me to believe that the underscore (present in my username along with "new_friends_gr" among others) breaks the redirecting process.

[Jim]

Caused by an attempted fix to a hacking attempt.  I'll fix the fix as soon as I can.

[Jim]

I might have this fixed now.  My first fix not only had the redirect problems, it didn't consider the fact that we have valid usernames with underscores.  I had put in code that was attempting to ignore any u= parameter that was not alphanumeric.  Now it should also accept underscores (but nothing else).

[SSOWorld]

and it works.