OUTLINE: This is a dose escalation study. Patients receive KRN7000 by slow intravenous injection on days 1, 8, and 15. Treatment repeats every 28 days for up to 6 courses in the absence of disease progression or unacceptable toxicity. Cohorts of 3-6 patients each receive escalating doses of KRN7000 until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose at which at least 2 of 6 patients experience dose limiting toxicity.