Hate to bring up Lance again, but do remember in 1999 he tested positive for saddle sore cream!
The RoadBikeRider newsletter went into a bit of a tiz lately about Lance's chamois cream (as viewed on OLN's The Lance Chronicles).
They went to the stop-action and found he was using ... Assos!
I've never used chamois cream - thinking about it for pre-Ironman rides next year - and have stuck with Savlon after rides.
Prevention is worth £££s of cure. As soon as you are done with your ride, whip them shorts off and get the area as clean and dry as possible. Sounds a bit silly, but if you're prone to sores, try to avoid sitting around in sweaty shorts - and that includes tea stops.
'Popping' the sore - yecch - can result in infection, not recommended.
I'm also thinking of the poor Aussie pro who had his saddle sore surgically removed in Europe, then had to fly long-haul back home - and all the sitting tore the stitches.
Another saddle to recommend: that mesh saddle that Ibbo tried out. If it fits, wear it.