Making links in Netscape messenger (v. 4.7) STILL causes an bus error. I hade no problem with that in RH Linux 5.2 (although I didn't use 4.7 then of course...). Is this a problem with Netscape? Kernel 2.2? Malloc? Glibc? Configuration?
Motif. The Motif that's statically linked into Netscape has issues when running on glibc-2.1. Current workarounds include running the glibc-2.0 version against the glibc-2.0 compatibility libraries (which increases the memory use a decent amount), or possibly running the libc5 version. This has been reported to netscape before. :(