rsAccessDenied for authorised user.

Hi, as many people in this group, I have the problem that some users
cannot access the report we designed. They receive the message:
The permissions granted to user '{domain}\{userID}' are insufficient
for performing
this operation. (rsAccessDenied)
The strange thing here is that I granted access to a group (Domain
Users) which holds all the users of this domain. I tested with 3 users
who all could access the report. Of course I thought that if these
users could access the report, other users should be able to access the
report too. But, when I tested with a fourth user I got the error as
stated above. I checked the rights for the group on the folders and
reports, but they are ok. So what am I misssing here?
I also tried to sign individual rights to the userId, but no luck
either. Then I tried to use an other userId too (fith userid for the
test) , same result, no access. So in my group "Domain Users" , which
holds all the users of the domain. Three users can access the report
and so far two can not. I didn't test with other accounts except for
these 5, that should be enough, don't you think?
We do not use "Anonymous Access" anywhere.
The server is Standard 2003
MS SQL 2000
Reporting Services 2000
Any help would be appriciatedOk, found out what the problem was. I didn't set the right permissions
on the top-level. So, first I had to set de security permissions in RS
on te "root"-folder, then on the subfolders and so on to the reports.
This solved my problemsql