Yum and Webmin

Hi all,
I have a server with CentOS 3.4 installed and the webmin control panel.
Last night I updated with yum, and this morning yum seems broken. I get this error...

Code: 
rpmdb: Program version 4.2 doesn't match environment version
error: db4 error(22) from dbenv->open: Invalid argument
error: cannot open Packages index using db3 - Invalid argument (22)
error: cannot open Packages database in /var/lib/rpm
Traceback (most recent call last):
  File "/usr/bin/yum", line 30, in ?
    yummain.main(sys.argv[1:])
  File "/usr/share/yum/yummain.py", line 163, in main
    (log, errorlog, filelog, conf, cmds) = parseCmdArgs(args)
  File "/usr/share/yum/yummain.py", line 75, in parseCmdArgs
    conf=yumconf(configfile=yumconffile)
  File "/usr/share/yum/config.py", line 155, in __init__
    self.yumvar['releasever'] = self._getsysver()
  File "/usr/share/yum/config.py", line 285, in _getsysver
    idx = ts.dbMatch('provides', self.distroverpkg)
TypeError: rpmdb open failed
Can anyone help me?
Thanks,

 

 

 

 

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