to clarify i asked a PC engineer friend about SP3 a few weeks back here is some of his reply... :dont look now:
That's without going into the nasty DRM that happens to nero and various rip/copy/burn/convert programs.
I don't run xp here at all so I can only go by what I see when I get called out to look at a malfunctioning machine in use elsewhere. I see "licence required" errors with WMP when attempting to play an mp3 ripped from a cd there and then.. and refusing to burn audio cd's from anythiong and with anything but the xp built in crap... then chucking the same "Licence required" or "invalid filetype" or "maybe missing codec.. want to search M$ for it?" errors.. and on machines that were working perfectly right before the update.
So it looks to me very like a DRM and validation update, and nothing to do with improvements or security (which is a joke on a 7 year old OS anyway.. you can't patch a turd, but you can make a new one.. as M$ know well)
That was an interesting read and I'm not doubting your friend's experiences but it prompted me to try it out for myself.
It seems to me that the machines he was talking about must have been pretty much trashed anyway. If that is only part of the troubles he's describing, I find it hard to believe that it can all be attributed to simply installing a service pack. One or two glitches maybe, but not all that.
Here's what I found so far:
I just took one of my cd's and ripped and burned it with Nero and played it back with media player 11 (and good old winamp) with no problems whatsoever. I'm now in the process of ripping one of my movie dvd's. I have no reason to believe that I won't be able to burn it with my usual burning software (not media player) and play it back through Power DVD, and all on my creaky old antique AMD machine too. I'll let you know how that goes.
Incidentally, call me paranoid but I've never ever used automatic updates simply because I like to update manually and pick and choose what I install on my machine without Microsoft presuming to install what they
think I need! Just my take on it.

Like anything else there'll be pro's and cons and no two machines are identical, and even if they're identical on the hardware side, I'll guarantee they'll be configured differently and running a whole different variety of software. Basically anything can cause problems.
There will always be two camps in any discussion, so if you still want to try it, make sure you back up anything important first - just in case. You know it makes sense
