Patients receive oral vorinostat (SAHA) twice daily on days 1-14 in step A. Patients receive oral vorinostat (SAHA) twice daily on days 1-4 and 8-11 in Step B and bortezomib IV over 3-5 seconds on days 2, 5, 9, and 12 during the first course and on days 1, 4, 8, and 11 during subsequent courses in both steps A and B. Courses repeat every 21 days in the absence of disease progression or unacceptable toxicity.