[CentOS] SeaMonkey on CentOS 6.3

Been a while since I used seamonkey, but needed it yesterday. The old version I had installed (2.11) threw an error when I tried it, so I grabbed 2.12.1 from mozilla.com. It throws the same error:

$ /usr/local/seamonkey/seamonkey & [1] 7050 $ XPCOMGlueLoad error for file /usr/local/seamonkey/libxpcom.so: libxul.so: cannot open shared object file: No such file or directory Couldn't load XPCOM.

Of course libxul.so is right there in /usr/local/seamonkey, as it is in the other expected mozilla-related places.

Reminds me of the old LD_LIBRARY_PATH issues in Solaris and others. What's the modern way to address this?

Is there a yum-installable version of seamonkey somewhere?