For all that is good and holy in the world, get on your hands and knees and crawl on the basement floor to make sure there is no water. Schedule a walkthrough when it is pouring -- do whatever you can to make sure it is dry. Also approach it like everyone is out to get you. Home Inspectors do not care about you, realtors do not care about you, the sellers do not care about you. You are a dollar sign with legs to them.
If you do happen to move in and find that your basement also doubles as a swimming pool (and you're in the area), DO NOT CALL BASEMENT DOCTOR -- those guys have what amounted to a 50% markup. Call Paul Rogers -- lifetime warranty that is transferable and he'll do it in 1 day.
If you can't tell...I've been through hell.