I found this in a non-English newsgroup. I suggest before trying this out to do some research on the Net and I take no responsibility about whatever...

/quoute

Also, after installing the XP-SP1 I found all sorts of fun little goodies
with a *drm*.dll's and other DRM related stuff permeating the system,
Mozilla, Netscape, and a host of other programs. After romoving them (and
no it doesn't mean Direct Rendering Module - it means Digital Rights Mgmt)
XP complained that my system would not function properly and might cause
corruption of the system causing it not to run. Of course this is not the
case and the system runs a bit faster and now Mozilla, Netscape, FreeAmp
and many other media programs don't seem to have the problems with certain
webpages or media content they did before I removed the SP1 DRM files.

/endquote