Comments in EPM 10'0

Hello everyone,

I have a problem with comments in my Input Form - when I put "Show as Microsoft Excel Comments" option and after want to refresh the report it takes very long time and then I get the error "Thr execution of report Default report failed. Please contact your administrator." And in details:

"Error while communicating with the server.

Framework message:
The underlying connection was closed: An unexpected error occurred on a receive."

If I take checkmark away ("Show as Microsoft Excel Comments") the report refreshes very quickly again and there is no error.