DISEASE CHARACTERISTICS: Histologically or cytologically confirmed nonhematologic malignancy unresponsive to existing therapy or for which no curative therapy exists Patients with prostate cancer must have withdrawn from antiandrogen therapy (flutamide, bicalutamide) for at least 4 weeks and must have progressive disease Measurable or evaluable disease No active brain metastases (e.g., cerebral edema, progression from prior imaging study, requirement for steroids, or clinical symptoms)

PATIENT CHARACTERISTICS: Age: 18 and over Performance status: ECOG 0-2 Life expectancy: At least 3 months Hematopoietic: Absolute neutrophil count at least 2,000/mm3 Platelet count at least 100,000/mm3 Hepatic: Bilirubin no greater than 1.5 mg/dL ALT and AST no greater than 2.5 times upper limit of normal (ULN) (unless due to hepatic metastases) Renal: Creatinine less than 1.5 times ULN Other: No serious uncontrolled medical disorder or active infection that would preclude study No hypersensitivity to agents containing polyoxyethylated castor oil (Cremophor EL) except in patients who received prior taxane therapy with premedication and did not experience greater than grade 1 hypersensitivity reaction Not pregnant or nursing Negative pregnancy test Fertile patients must use effective contraception

PRIOR CONCURRENT THERAPY: Biologic therapy: At least 4 weeks since prior immunotherapy Chemotherapy: At least 4 weeks since prior chemotherapy (6 weeks since prior nitrosoureas, mitomycin, or carboplatin) Prior taxanes allowed No other concurrent chemotherapy Endocrine therapy: See Disease Characteristics At least 2 weeks since prior hormonal therapy No concurrent steroids No concurrent hormonal therapy (except leuprolide acetate for prostate cancer) Radiotherapy: At least 4 weeks since prior radiotherapy to 30% or more of bone marrow No concurrent radiotherapy Surgery: Not specified Other: No other concurrent investigational anticancer therapy