Reports vs. ReportServer permissions

I have created and deployed my reports on my report server, then I have set the appropriate permissions for MYDOMAIN\Domain Users (System User + Browser Role) across the whole report server (inluding the Home folder and its My Sample Reports subfolder). However, when I (as the domain user) access http://myreportserver/Reports I see nothing, only the empty Home folder. The same time, when I access http://myreportserver/ReportServer I can browse all I need and even generate reports. Please explain, what is wrong with my Report Manager at http://myreportserver/Reports, what security issues I may have. Thanks in advance.Thanks for no response but we have already solved the problem by adding missed <identity impersonate="true" /> line to C:\Program Files\Microsoft SQL Server\MSSQL.3\Reporting Services\ReportManager\web.config. See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnnetsec/html/SecNetAP05.asp for details.