I don't feel like making my own theme from scratch, so I looked for some theme frameworks, but they're all old and when I install them on WP 3.0 they produce loads of errors and don't behave properly. I just need a 3.0 ready blank theme with the bare elements (just text, but functional) to then shape myself into a good looking blog. Thanks in advance.
The new default TwentyTen is always a very start, because it has best support for the new 3.0 theme features.
If you feel more HTML5-y, Toolbox is your theme.
Roots is a blank theme with a lot going for it - HTML5 Boilerplate + Blueprint CSS + more.
I know that the Genesis theme framework is 3.0 compatible, and utilizes many features such as custom nav menus and featured images. studiopress.com/themes/genesis - it is a premium theme, is supported, and gets regular updates.
Thematic is also 3.0 compatible, if your not looking for a premium theme framework. Check out themeshaper.com/thematic/
If you are into the whole BuddyPress thing, check out Buddymattic at wordpress.org/extend/themes/buddymatic
I was going to suggest the Starkers theme too, it's worth pointing out that Starkers is a stripped back version of the default Twenty 10 theme that comes with WordPress 3. I only mention this as it may be useful to use that as a starting point for WordPress 3.0 site development from the perspective of seeing what the new features are like.
I use Genesis and it was just updated to work with 3.0. It is a framework and you can build child themes on.
I agree that Genesis is worth a look. I also use, and like a lot, Builder from iThemes.
I have used Thesis theme which serves as a framework too and I like it a lot.
Hybrid with Skeleton child theme is good combination to make use of framework, but start with minimal design.
You may also want to take a look at Bones. Although it's arguably not a bare theme, the idea is to cut it back to what you need. it's only fairly new and certainly works with WP 3.0
Check Blank Theme by Chris Coyier[css-tricks.com].
WP Basis ist als a theme for this job.