a) there is no benefit to a 64-bit version of FileZilla.
... I won't even answer to that..
b) it's not a windows program. it's cross-platform (using wxWidgets) and developed under Linux.
then if it's not a windows program don't clam it is supported under windows. cause windows is 64 bits today. using 32 bits emulation in 64 bits windows to run your obsolete software is not ethical.
c) the 32-bit version works under Windows. I used it yesterday on Vista 64-bit.
we're talking about performance here.. dude.. wake the fuck up! we're in 2009!
d) botg doesn't have a Windows development environment and is the sole developer.
then lets give it to him, he can download windows from here.. :<illegal>