Yum is hosed on x86_64 system...

[Ubence Quevedo]

Hi Everyone,

I updated my x86_64 system this morning, and now when I go to run  
yum, I get the following:

[root at f7-64 ~]# yum clean all;yum update
Cleaning up Everything
fedora                    100% |=========================| 2.1 kB     
00:00
primary.sqlite.bz2        100% |=========================| 4.7 MB     
00:15
livna                     100% |=========================| 2.1 kB     
00:00
primary.sqlite.bz2        100% |=========================| 144 kB     
00:00
updates                   100% |=========================| 2.3 kB     
00:00
primary.sqlite.bz2        100% |=========================| 2.3 MB     
00:12
Traceback (most recent call last):
   File "/usr/bin/yum", line 29, in <module>
     yummain.main(sys.argv[1:])
   File "/usr/share/yum-cli/yummain.py", line 105, in main
     result, resultmsgs = base.doCommands()
   File "/usr/share/yum-cli/cli.py", line 278, in doCommands
     self._getTs()
   File "/usr/lib/python2.5/site-packages/yum/depsolve.py", line 77,  
in _getTs
     self._tsInfo.setDatabases(self.rpmdb, self.pkgSack)
   File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 526,  
in <lambda>
     pkgSack = property(fget=lambda self: self._getSacks(),
   File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 385,  
in _getSacks
     self._pkgSack.excludeArchs(archlist)
   File "/usr/lib/python2.5/site-packages/yum/packageSack.py", line  
337, in excludeArchs
     sack.excludeArchs(archlist)
   File "/usr/lib/python2.5/site-packages/yum/sqlitesack.py", line  
812, in excludeArchs
     cur = cache.cursor()
AttributeError: 'NoneType' object has no attribute 'cursor'
Segmentation fault

I tried downloading the yum rpm from a update mirror and re- 
installing it, but this doesn't seem to have help.

Alot of other things are acting weird too [can't compile Nvidia driver].

I also installed the last 2.6.23.1 kernel that was listed in yum  
before this all started to go wrong.

If I can't get this fixed by next week, I'll just install a fresh  
copy of F8 on this system.

Any ideas?

Thanx!

-Ubence