This isn't the first time that the Views Module has spit out invalid code. It's not a huge issue, but I've seen Views spit out div blocks without a close tag, just causing me all kinds of headaches in IE.
While trying to do some ahah uploading for a 5.x Drupal module I'm porting to core 6.x, I discovered some problems with my local 32-bit apache setup on my Mac OS 10.5 development machine.
The block data are clearly saved in the blocks table in the database. But the info field isn't. To get this, one needs to go in two different directions.