Biggest complaint as of 3.0.192.0 that I read is, of course, the lack of Flash support. I've found that to be refreshing -- enjoying the web without all those annoying embedded flash items.

What I miss is being able to configure search for the Omnibox. Besides speed, the most appealing feature of Chrome is its configurable search implementation. By far, the fastest, most flexible way to perform searches.

Haven't tried it? Look under Preferences->Default search->Manage.