Chrome needs to fix the History and Downloads pages. I can't believe they released 2.0 stable with them still broken (right click doesn't work, so you can't remove entries, download speed doesn't display).
Also in the latest Dev biuild the DOM Inspector is broken AGAIN. Task Manager is broken too.
On the bright side we're beginning to see extensions (you need to put --enable-extensions on the command line for them to install run, and use chrome://extensions/ to view and uninstall) and the beginnings of theme support were added in the last Dev build, it seems.
Oh yeah and the last couple Dev builds broke a few Acid3 tests.
And the long standing bug where links aren't marked as visited until you visit them twice STILL occurs, which prevented a perfect Acid3 test for a while now.