the new glibc-2.1 breaks source compatibility with
xterm(patch98) and SSH-2.1.26.
Also there is a binary compatibility problem with
blackdown4s JDK which can be worked around by using either
native_threads(get glibc native package and "export
THREADS_FLAG=native") or probably the libc5 version.
I seem to have read somewhere that undefining HAVE_UTMPX_H in the
offending source for ssh fixes the problem, but I haven't tested that.
The fix for ssh-1.2.26 is add -D_GNU_SOURCE to CFLAGS, compile
and delete the bogus line that the compile fails on. (The line
is already deleted in ssh-1.2.27).
I'm closing this bug because
a) xterm(patch98) is part of XFree86 (I assume).
b) ssh is not a Red Hat package and the fixes are available.
c) the broken blackdown JDK is already mentioned in several
other bug reports and will be solved there not here.