I've had my new DDM's with warning cancelers installed now for over a month, and have had no problems at all.  I still have the daytime running light feature enabled, so they're on pretty much all of the time, which concerns me a little, but I'm sure I'll eventually forget about it.
When I installed them, I tried to jam everything into the light housing as best as possible, and ended up with a pretty big mess, but it all held inside.  I've been wondering lately if I should open it up and see how really bad it looks – I'm mildly concerned about rubbing and heat. 
I do notice every so often when I hit some large bumps, that the lights seem to shimmer a little bit.  I don't remember if my previous lights did that in the Audi, but I'm pretty sure they did.
Overall, I'm really happy about the upgrade – the old halogens were simply ugly.

One really annoying thing that seems to be growing in annoyance is the fancy key with my C30.  I don't have the keyless entry, just the "normal" key.
First, the key itself is shaped like a traditional key, but it's not similar to many of the other keys I've had recently.  My Audi key folded into itself to make it nice when it was in my pocket.  It would be much better if the thing was smaller – it's a horrible size to fit anywhere, especially into your pocket.
Second, the key itself when it's in the ignition is so close to the wiper control, and to the radio dash, that keys hanging with it on my keyring bang against things.  That's not so bad for the wiper control, but it's really not good for the radio dash – I'm afraid of wear and dents.  The other annoying thing is that the keys vibrate on the metal valet key part of the Volvo key, and that can be heard throughout the car.
I really wish they had spent more time thinking about this part of the car since it's used all of the time.  For now, I end up swinging my other keys across things so they don't bang, but they still vibrate.  I'm considering a keyring that will allow me to disconnect the car key from it, but then I'll likely lose it

I haven't posted here in a while – too much going on at work lately.  
Have had no problems with the C30.  Still drives just like the first day, and I just hit 1000 miles today!  Just about time to take it in for it's first oil change, I think.  
There are some annoying noises that I've traced down to loose seatbelts when a backseat passenger gets out, and other nonsense that could be termed user error.
I am having some issues with playing MP3 CDs but I think it may be that I am trying to cram too much onto them (126 tracks on one) and/or have a bad CD or two.
More later!

Back 2, originally uploaded by stevemitchell.

Had some extra time today, and went to Matthews Park on Lake Washington to take some photos. Arrived just as the sun was going down and snapped a few. The color was noticeably darker than most of the other photos I've taken, and it seemed to have some more depth to it.

Really need to get a tripod so I can take some night photos next!

I've uploaded a few photos to my Flickr account.  They can be seen here.  I plan to take a bunch more of the interior and other interesting things.
I've also stumbled upon a great forum online called c30world.com.  Lots of great information.  Will be spending a lot of time there looking around.
More in the next few days!

I've ordered a few things for the new C30…

• Cargo Mat – molded plastic - good for protecting the back area from larger scrapes and dents, as well as containing any spills
• Mesh cargo pocket - good for stowing the small stuff that tends to bounce around
• Rubber floor mats - a must for the rainy northwest

I also searched for a while on iPod adapters – hoping that I might be able to buy the Volvo provided kit and add it on myself.  It was pretty obvious after reading some of the posts on c30world.com and viewing the Volvo Install Instructions that I wouldn't be doing this anytime soon.  No way am I taking all of that stuff apart!
I found what looks to be a pretty slick alternative – the Griffin Autopilot, which gives you a 12V charger and line-out quality 1/8" output.  In addition, you have controls on the top of the 12V plug to manage the iPod.  Reading reviews on Apple's Store (I found it there while looking for a 1/8" cable for my iPhone), I found at least one person with a Volvo S40 that bought it and was very happy.  The center console, as far as I understand, in my C30 is almost exactly the same.
I ordered one online from Apple.com via overnight delivery (of course!) and will post more details when it gets in.