I make no secret here. I am a big fan of that lens and I noticed that it is very very difficoult to find it in Stock somewhere. My sources told me the lens has been sold out at least until early 2011! Bayern Fotoversand is now selling three of them on eBay (Click here). They ship to Europe only but if you are located outside Europe feel free to contact them. They may will make an exception for you!
If you need autofocus you might want to wait until Panasonic announced the 25mm f/1.4 Micro Four Thirds lens (To not confuse with the Panasonic/Leica 25mm lens for Four Thirds)
UPDATE: Link corrected. Sorry!