we have one site in DNN and we have developed a custom registration form. Site is in english and arabic language.

1) When I am registering in eng site and then after login I click on links its working fine, but When I am registering in Arabic site and then after login i click on some links it takes me to the login page and clicking on some links it log outs and shows normal page with data.

2) If I register in eng site with same user name that i have added in arabic site and then come and login with same Arabic site credentials it works.