"Too many requests being handled for user" error while accessing Report Manager

Hi,
When I try to access Report Manager(http://<reportserver>/Reports) I'm
getting the following error message:
"There are currently too many requests being handled for user:
[DOMAIN]\[USER]. Please wait until the current requests have finished
processing before issuing any more."
However there are no problems when I try to access the Report
Server(http://<reportserver>/ReportServer).
Has anyone encountered a similar situation before?
Thanks.
RamkiRestarting IIS resolves the issue. Increasing the
"MaxActiveReqForOneUser" in RSReportServer.config from its default of
20 might also be an option.
Ramki