Except that the upload speed didn't go up. So I left a message on the forums asking whether my modem was up to spec for the new upload speeds, and three days later a box arrived. Luckily I was lying in bed feeling shaky so I could stagger to the door and get it.
The results are pretty good, especially considering my desktop is connected to the router via the electrical circuit, which I'm sure isn't as high quality as it could be:
Next up will be when Virgin upgrades everyone's download speeds, (somewhere between October and the middle of next year), at which point I should have a 60MBit connection.
As I was discussing with dalglir earlier, things have really moved on with technology. Not only are disks staggeringly bigger, but I remember when I had a modem running at 14.4k, being charged by the minute. I remember setting up a 10Base2 network in one of the earliest offices I worked in, and dealing with the whole network going down if one connector came loose. And now my internet connection is an order of magnitude faster than that. I'm sure I'll still get bored of waiting for things though - just give me five minutes to get over my future shock.
Original post on Dreamwidth - there are comments there.