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Description of problem:
From an email thread on rhkernel-list titled Re: Fwd: Issues with SCSI Transport Classes and the LSI mptfusion driver:

Bill Nottingham:
the mechanism for doing automatic driver upgrades is currently disabled
 in the kernel.  /usr/sbin/module_upgrade being run from the %post of the kernel.

DaveJ:
How much headache is this going to cause RHEL4 upgrades ?

Bill: 
Sound configuration will break on all upgrades.
People using eepro100, megaraid, dpt_i2o, sym53c8xx_2/ncr53c8xx will also see problems.

DaveJ:
This sounds of sufficient to get into the respin in the new year
to me

Version-Release number of selected component (if applicable):
pre-rc2 (903 kernel)

How reproducible:
Always

Steps to Reproduce:
1.x
2.
3.
  

Actual Results:  x

Expected Results:  x

Additional info:

x