It may be that the WAPO realizes that Kerry is toast. If so, they no longer have any incentive to bail him out. The WAPO is leftist but they don't seem to have the personal hate issues with President Bush that CBS (particularly Rather) and the New York Times have with him. WAPO may be doing their job here.
I think the Washington Post is smelling "Pulitzer"
The WP is jumping on this rather fast. Make that Rather fast.
If the fax showed the location (i.e., Kinko's) did it also show the date the fax was sent?