Move reports from one folder to another in SSRS 2008 results in error.

I have 34 reports in a folder ABC on my Reporting server. I go to my Report Manager (http://servername/Reports) and I try to select all of the reports (by clicking the checkboxes next to the report names) and move them to another folder (BCD) on my Reporting server, after clicking Move, I get an error message “Internet Explorer cannot display the web page”.

I experimented a bit, and it turns out that I can move up to 27 reports in my case. So, how do we go about it? If I have 300 reports in a folder do I have to manually click 20 at a time in order to move them in different folders?