OUTLINE: This is a dose escalation, multicenter study of L-778,123. Patients receive paclitaxel IV over 3 hours followed within 24 hours by L-778,123 IV over 7 days. Courses repeat every 21 days in the absence of disease progression or unacceptable toxicity. Patients achieving complete response receive 2 courses after documentation of response. Cohorts of 1-3 patients receive escalating doses of L-778,123 until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose at which 2 of 6 patients experience dose limiting toxicity. Patients are followed at about 2 weeks.