I've been using the same bucket of Starsan since September. I never quite trusted when people said it would last a long time, but then I ran out of Starsan and haven't bought a new bottle. So, I have forced myself to keep using what I've got. Haven't had any problems yet. Maybe after the holidays I'll get around to buying a new bottle of the stuff.
On deck - a few single hopped pale ales - Cascade, Calypso, and Legacy
Primary/Secondary - a sour mashed Berliner Weisse; Chris' Tall Ale (a Belgian golden ale); Cascade Pale Ale; Northern Brewer's Oud Bruin de Table / nada
Bottled - Imperial India Pilsner Ale; Little Gyle Palesner; Guajillo Ancho Brown Ale; Back To School Porter, an Imperial Robust Porter with vanilla beans added