i'm guessing yes. i've been having difficulty with Flash, as it is apparently unsupported on amd64 builds. "but adobe is a member of the linux foundation," you say. hey, i didn't say they were members in good standing.
i sent a note to adobe support inquiring about the state of flash for my machine. i still haven't even heard back. even the ubuntu wiki suggests a simple one line command, which runs just fine, except that the desired result is not acheived.
now i'm donking with gnash, but without luck.