Hi All,

If somebody was interested in this issue, I can contribute to it after experiencing on. After being searching the net for the concrete fix for the issue and finishing unsuccessfully, I downloaded the following cumulative fix: SQLServer2008R2-KB2703280-x64 and installed it. The issue was resolved.

I also tried using a Login with different databases with different collations on an sql server 2005 instance and it worked there without any issues.

Regards

IgorMi