Hi all Im having a problem with workstations starting a multicast session then dropping out. They are Lenovo R500's with the broadcom card. I have moved them from a switch (3com 4400) to a hub to try and rule that out but it doesn't seem to make a difference. Last night i started with 6 and 2 finished. This morning tried the remaining 4 and one finished now im running the last 3 and 2 have dropped out already.