As my OS language set to Chinese, maybe it's not very clear the menu item which I point. If you need any further information, please let me know.
My Alfred 2(173) setting is in the bellow:
http://d.pr/i/pYJj
After upgrade to OS X 10.8.3, every time I press Command+g, no file will be selected, but a windows will pop up:
http://d.pr/i/hRyF
In Finder, this window same as I select this menu:
http://d.pr/i/WIMd
Finder->Display->Show Display Option (I'm not sure the the translation in English)
If I change the shortcut other than Command+g (e.g. Command+Shift+u, I already try some), the same problem will be happen too.
I'm not sure wether this update cause the problem, but I didn't change other settings in my system and the File Selection function worked well last week.