give it more time. also keep the bottles at 70f to carbonate...any cooler and it'll take longer, or may stall if it gets real cold.
i always dissolve sugar in boiling water, cool it, then put that in the bottling bucket, rack the beer over (it'll stir the priming solution into the beer as it racks).
Primary: English Mild
On tap: Pale Ale, Lancelot's Wheat, English Brown Ale, Steam Beer, HoovNuts IPA
Bottled: MOAM, Braggot, Raspberry Melomel, Merlot, Apfelwein, Pyment, Sweet mead, Cabernet
Gal in 2009: 27, Gal in 2010: 34, Gal in 2011: 13, Gal in 2012: 10