Patients receive gemcitabine hydrochloride IV over 30 minutes on days 1 and 8, cisplatin IV over 3-4 hours on day 1, and temsirolimus IV over 30 minutes on days 1 or 2, 8 or 9, and 15. Treatment repeats every 21 days for up to 6 courses in the absence of disease progression or unacceptable toxicity.