Logged In: NO 

utf-8 is compatible with ascii, but not with latin-1 --
non-ascii latin-1 characters interpreted as utf-8 result in
garbage.

yes, many unix platforms have some support for utf-8, but it
often does not work sufficiently well and many sites use
non-unicode capable programs. i don't think it is realistic
to require roundup users
to switch to unicode.

mail programs that exhibit these problems include at least
mutt and mh.

the problems shows up in the web interface also. when mail
with latin-1 accented characters is sent to roundup, the web
interface does not show those correctly.