Sorry to be a pain - you've probably been asked this question a million times...
I'm currently got gnash running on a ShevvaPlug (Armel CPU - Debian Squeeze) but it is only version 8.5.5.
I noticed that the latest version is 8.5.9 (8.5.10?) - is this available for my hardware/software, or do I already have the latest version for my machine?
However, upon 'apt-get update' I get the following message 'W: GPG error: http://www.getgnash.org squeeze Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 408A2BA7D5196214'