This study is a Phase I trial in two parts. In part 1, an MTD to the combination of perifosine and sorafenib will be determined. The experience with perifosine and other biologic agents has been that doses determined in Phase I studies are not as well tolerated in larger groups of patients when response is an endpoint. Thus in part 2, with the MTD as a starting point, a group of patients will be accrued with the goal of ensuring that they will be able to tolerate at least three courses of therapy, which would make them evaluable for response in a Phase II study. The effects of the combination of perifosine and sorafenib will be evaluated for response rate and time to progression. The pharmacokinetics of the combination of the study drugs will be measured.