firefox 3.0 + flash crashes

[wangmaster]

Too many of the extensions that I rely on are not available for firefox 3.5beta yet, so I've installed Firefox 3.0 downloaded directly from mozilla, and it mostly works except that any flash objects crash the browser instanteously. I tried with Fedora 10 and it worked fine.

Anyone tried this and seen anything similar?

here's the segfault and strace output just prior to it:
open("/lib/i686/libcurl.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/libcurl.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib/libcurl.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
munmap(0xe7e47000, 166566) = 0
open("./tls/i686/sse2/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./tls/i686/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./tls/sse2/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./tls/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./i686/sse2/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./i686/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./sse2/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./plugins/tls/i686/sse2/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./plugins/tls/i686/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./plugins/tls/sse2/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./plugins/tls/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./plugins/i686/sse2/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./plugins/i686/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./plugins/sse2/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("./plugins/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 86
fstat64(86, {st_mode=S_IFREG|0644, st_size=166566, ...}) = 0
mmap2(NULL, 166566, PROT_READ, MAP_PRIVATE, 86, 0) = 0xffffffffe7e47000
close(86) = 0
open("/lib/i686/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib/libcurl-gnutls.so.3", O_RDONLY) = -1 ENOENT (No such file or directory)
munmap(0xe7e47000, 166566) = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---

Something is trying to load libcurl 3, and I don't konw if that's causing the munmap to segfault. Fedora 10 didn't have libcurl3 either (just 4) so i don't know for sure what's going on. Any ideas?

[wangmaster]

solved. Apparently libfreebl3.so that's bundled with the mozilla.com firefox build causes the problem. I've moved libfreebl3 out of the way so that it now uses /lib/libfreebl3.so and flash works in firefox 3.0.10

[wangmaster]

To provide a little more info in case anyone else cares, the mozilla.com bundles nspr, nss, sqlite, and xul libraries.

the nss, nspr libraries are in the same version class (if not the exact same version) as the ones fedora bundles. xul are not, sqlite I'm not sure. So I started pulling out duplicate libraries starting with nspr and nss and bingo, crash problems went away.

This of course assumes the 32-bit nss, and nspr packages are installed if you're on a x86_64 install.
libfreebl3.chk libnss3.so libnssutil3.so libsmime3.so libssl3.so
libfreebl3.so libnssckbi.so libplc4.so libsoftokn3.chk
libnspr4.so libnssdbm3.so libplds4.so libsoftokn3.so

That's the library list that I pulled out.