Can someone please give the recipe for undoing nightly ymy updates?

It looks like many things were updated last night and now many things
don't work.  Firefox in particular is rendered unusable.  This seems to
be associated with plugins that don't know about the updated libc, since
it is crashing with messages like:

*** glibc detected *** /usr/bin/acroread: free(): invalid pointer: 0x09797ac0 ***
======= Backtrace: =========
/lib/libc.so.6[0xf6b1a5a5]
/lib/libc.so.6(cfree+0x59)[0xf6b1a9e9]
/usr/lib/libX11.so.6(XFree+0x1d)[0x5a8f7d]
/usr/bin/acroread[0x8604952]
/usr/bin/acroread[0x8608607]
/usr/bin/acroread[0x82d315f]
/usr/bin/acroread[0x84ffbaf]
/lib/libglib-2.0.so.0[0x77f451]
/lib/libglib-2.0.so.0(g_main_context_dispatch+0x182)[0x7811a2]
..

Furthermore, there seems to be some bad interaction with my graphics driver,
causing some web pages to make Xorg to consume 100% of the CPU for seconds
at a time every time I try to scroll one line on a relatively simple web page.

Is there a recipe for updating all the adobe plugins that depend on an earlier
version of libc?  Is there a recipe for backing out the updates to get back
to where things more or less were useable?

I'm running SL5.3.

Thanks,
Matthew.

------------------------------------------------------------------------
Matthew Jones                                           Office: PHYS 378
Department of Physics, Purdue University      Office phone: 765-496-2464  
525 Northwestern Ave                        Fermilab Phone: 630-840-2859
West Lafayette, IN 47907-2036          e-mail: [log in to unmask]