 If you are found to be eligible to take part in this study, you will receive temsirolimus through a needle in your vein on Days 1, 8, 15, and 22 of each 4-week study cycle. On Day 1 of Cycle 1, the study drug will be given over 60 minutes. If you tolerate the study drug well on Day 1 of Cycle 1, it will be given over 30 minutes at all other scheduled administration dates as long as you still tolerate it well. If the dose is not well tolerated, the dose will be reduced for future study visits. 