Strange characters in names of users and groups

Hello, I am using dokuwiki, a WIKI programmed in PHP and I have the problem that, in spite of the granted access rights inside DokuWiki, , members of a certain user group are not able to access parts of the Wiki they should be able to access. To find the cause of the problem, I added some lines to the DokuWiki code to get get more debug ouput. So, from the login, I get the following debug ouput: user = christoph.pleger groups = prof But from checking if the logged in user has access rights for a specific Wiki document, I get the following debug output: user = christoph%2epleger groups = prof%a So, my suspicion is that the problem is caused by those strange character sequences "%2e" and "%a". What can be done to remove them an get the same user and groups strings as above? Regards   Christoph 

Attachment: [application/pgp-signature] This is a digitally signed message part signature.asc