 Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Cohorts of 3-6 patients receive escalating doses of CCI-779 and bevacizumab until the maximum tolerated dose MTD is determined. The MTD is defined as the dose preceding that at which 2 of 3 or 2 of 6 patients experience dose-limiting toxicity. Phase II: Patients receive CCI-779 and bevacizumab as in phase I at the MTD determined in phase I. After completion of study treatment, patients are followed every 3 months until disease progression and then every 6 months for up to 3 years after study entry. 