I'll vouch for AOL.
Waaaaay too much slow gfx (Much in the same way as XP/Vista), unreliable, auto-restart feature after it crashes (Shows how much faith AOL have in their browser) and ? knows how many menus.
Not to mention the spyware zapper that performs a useless 30 second scan on boot-up that does nothing execpt to slooow the PC down. And even when the "aolsoftware.exe" is supposed to be running in the background the PC is at least 50% slower than normal...
And im using AOL right now...(Killed the background task off already)
Sigh.