What is the status of the 64-bit flash plugin for Linux?
There was an alpha release of 10.1 you removed after the virus warning for 10.1 which probably means Adobe's Flash for Linux "skeleton crew" didn't have time to update the 64-bit version.
Please. I manage many large scale projects and the effort to compile under 32 and 64 bit is minimum once the code is scrubbed for poor integer/pointer sizing. This should only have to be done once, after which the effort to produce both products is trivial.