[plt-scheme] PLT Web Server Password File

Hi,

I am building a system where the usernames are numbers.  I created a 
password file with a sample user as follows:

'(("srs" "/servlets(/.*)?" (12345 "text")))

When I access the web server nothing happens.  However, if I change the 
username to include a letter everthing works.  For example:

'(("srs" "/servlets(/.*)?" (p12345 "text")))

Does anybody have any recommendations are how to setup the PLT web 
server to use numbers as usernames.

Thanks,
Arend