Been there for a while, no open bug. @hppa: for some reason you didn't keyword 1.6.4 but only 1.6.3-r1, is there any reason for that ? (I'm not aware of any reason) Perhaps you'd like to keyword 1.6.4 and wait some time before marking it stable.
Sparc stable.
ppc64 stable
ppc stable
x86 stable
Stable for HPPA.
alpha/ia64 stable
amd64 stable