Me too, 5 days ago. Maybe it's time to switch back? Alfred hasn't surprise me in any way, maybe QS set the bar too high.
The last example shows all the menu items for the app in quicksilver, so I can search through it. Kind of like the search box in the app's help menu, but faster and easier (just make sure to bind that action to a key).
Select an item in finder, press [alt-cmd-space] and type "email", [tab], then type the name of the person (QS searches your address book) and then hit enter to send off.
EDIT: Not very stable though...crashed it just now when trying to use the proxy select to append to file.
It's a lot more stable now that I trashed the associated .plist and reinstalled.