Do you have a decent graphics card? If so, did you use the version of vanitygen that exploits it? Doing so can make a big difference. On my machine, generating 1Brangdon gets to 50% after 511 days with vanitygen, 310 days with vanitygen64, and 15 days with oclvanitygen. So 20 times faster with the graphics card.
i used vanitygen64
i didnt know about oclvanitygen. i have a whole slew of GPU miners that it should work on. i will try it sometime as i retire my gpu's but they are still hashing strong from me so i hesitate to take one offline.