Sorafenib and Docetaxel in Patients With Prostate Cancer That Did Not Respond to Previous Hormone Therapy

RATIONALE: Sorafenib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as docetaxel, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Giving sorafenib together with docetaxel may kill more tumor cells. PURPOSE: This phase II trial is studying giving sorafenib together with docetaxel to see how well it works in treating patients with metastatic androgen-independent prostate cancer.