My Thinkpad X40 died some time ago so I finally got around to buying an 8 GB Transcend SSD for just under US$ 300, this isn't actually that bad as 1.8 inch harddrives are ridiculously expensive. The harddrive worked perfectly right out of the box.

The harddisk is obviosly completely silent the only way to tell it's working is the harddisk light, unfortunately my battery is very old and doesn't hold up long, but I still get maybe 1 to 2 hours out of it with the new harddrive. I'm assuming I'm getting more battery than before.

I wrote a blog about the whole thing if you're interested. http://blog.opspin.dk/2007/09/ssd.html