Glad that it's not your camera, but bummed that your lens is on the fritz.
If you looking to replace your lens, you could take a chance and get another Canon 1.4, save some cash and get a 1.8, OR look into the Sigma 50mm f/1.4 EX DG HSM. I'm definitely not
a huge proponent of 3rd-party lenses but I've heard amazing things about the Sigma version of this lens. It's likely better-built (ironically) than the Canon...
Or you could drop the big money on a 50/1.2 from Canon
Canon EOS 5D MkII | Canon EOS 7D | Canon Digital Rebel XSi | EF 35mm f/1.4L | EF 50mm f/1.8 II | EF 85mm f/1.8 | EF 100mm f/2.8 Macro USM | EF 135mm f/2L | EF-S 18-55mm f/3.5-5.6 IS | 580EX II | LumoPro LP-120My Flickr