DRI only works for root - normal solution does NOT work

I have been using DRI like this for a long time, and it has recently become a 
huge annoyance: DRI can only be used as root, and not by any ordinary user. 
As you can see, this is both a major inconvinence and a security risk.

However, the obvious solution, simply putting the section "DRI" in the Xfree86 
config file, and setting the mode to 0666 or even 777 does not work. In the 
GLXinfo utility as root, everything seem to be okay, but as a regular user, 
it does nothing for about 20 seconds, and reports that the usage of direct 
rendering is not allowed (dosen't specify why) and it falls back to software 
rendering. 

Does anyone know how to fix this problem? I'm using an ATi Radeon 7500 PCI 
version, and my system has both kernel version 2.4.10 and 2.4.19, as well as 
XFree86 4.30.

Thanks in advance for your help!


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