My most frustrating issue is when you have some "home" link and it points back to the home of the blog, logic right ?

But why do you have "articles" or even "blog" link aside ?

It's a joyful surprise for me when the logo actually links to the right thing. Also it's not just blogs--any subsite, like documentation sites, forums, company wikis, etc.

vBulletin and their ilk do this almost as a rule. The corner logo is always to the board index and no company link anywhere.