I respectfully disagree, Paul. Startups going through your program are rated "Grade A Prime" because of your vetting process. Any angel worth his salt in the Valley will talk to a YC company, if for the only reason of not to cheese you off.
A lot of the guys attending Hackers and Founders aren't quite so luck. If you're starting from scratch and going from two guys in a garage, through, getting introductions and meetings with individual angels, and raising a round that way, I it tends to take a lot longer than a couple of weeks. That is, if you are able to raise money at all.
At least that's my birds eye view from the guys attending Hackers and Founders.
It still depends where you live. In some places it takes two years just to find an angel investor, and then six months to make the deal, in which the angel takes 50% of the company whatever the size of investment...
Generally it takes at least two months.