Oooh I am definitely bookmarking this thread! I've told myself that I am not allowed to move again unless I've bought a condo/townhouse/house. Seeing how I've had 5 zipcodes in 4 years, this is going to be quite a feat. Luckily I like my current rented condo so I don't think I have many worries.
Anyways, I decided last month that I was going to start saving money towards a down payment, but have no clue how much I should save. Thanks everyone for all this great information - I'm going to read this all later.