Just trying to help, dude!
Now I've confirmed what they've officialy said and noone believed! Because noone trusts big companies. ... Right? ... Right?

The one about EA buying Valve and integrating steam into their own online store system? The one in which EA states that old customers do not need to worry about missing games as they are still available, customers just need to rebuy them? The one that will also state that EA will improve Steams DRM with ONE time activation limit, making games only work 30 days without rebuying, allowing EA to monitor ALL activity on your computers and preventing access to all torrent/pirate site or any other site EA deems harfull to them (yes, GOG.com will be blacklisted as well as any review site/blog that gives an EA title less than 90/100 that it deserves)? Did you mean that update?

I just restarted Steam and it now lists all my games correctly.
I'm hoping, for Steam's sake, that it was a problem on my end (Steam went through an update when I launched it again), and that there isn't really a possibility for customer's games to just start randomly disappearing in their system.
I need Steam for the good Indie and casual games. Like that new flashy Tower Defense game, it's effing great.

No more major than downloading all of them from the internet again. In fact, depending on how you did it, it would likely be much faster to transfer them from one PC to another. I do it all the time with my home network (transferring games from my Win machine to my Linux machine). If you don't have a home network available, you could do it one game at a time using a thumb drive, or perhaps the quickest way of all, take the hard drive out of the old PC and temporarily put it in the new PC allowing a drive-to-drive copy. Anyway you do it, it still much easier than doing the "normal" way through Steam.

That's not happening. That would never happen. That could never happen.