Stupid crap that drives nut...

...  every time I re-install and configure a box to my likings...

• Firefox favicons

Makes me go bananas... There used to be a Firefox extension that simply combed your Bookmarks, and dloaded every single favicon, as well as testing your Bookmarks for broken links...
But the developer got pissed off with Firefox and removed that extension.

• Date column on Evolution

This one seems stupid enough, but nevertheless, it really fucks my workflow up, specially on tiny screens like on the X140e...
The Date column on Evolution is HUGE! It steals a huge amount of screen real estate just because, and AFAIK, there is no way of setting this on a global way, you have to change the width on every single directory you have.