Description of problem:

repoquery --changelog unpredictably reports errors. When I run as root:

'repoquery --changelog kernel' reports UnicodeDecodeError (like in another bugzilla entry 483157)
'repoquery --changelog tcl' reports yum.Errors.RepoError: database disk image is malformed

'repoquery --changelog tcl' works when issued as regular user.

Version-Release number of selected component (if applicable):
yum-utils-1.1.19-1.fc10.noarch


How reproducible:


Steps to Reproduce:
1.'repoquery --changelog tcl' 
  
Actual results:
Traceback (most recent call last):
  File "/usr/bin/repoquery", line 857, in <module>
    main(sys.argv)
  File "/usr/bin/repoquery", line 853, in main
    repoq.runQuery(regexs)
  File "/usr/bin/repoquery", line 501, in runQuery
    print pkg.doQuery(oper)
  File "/usr/bin/repoquery", line 173, in doQuery
    return getattr(self, "fmt_%s" % method)(*args, **kw)
  File "/usr/bin/repoquery", line 264, in fmt_changelog
    for date, author, message in self.pkg.returnChangelog():
  File "/usr/lib/python2.5/site-packages/yum/sqlitesack.py", line 225, in returnChangelog
    self._loadChangelog()
  File "/usr/lib/python2.5/site-packages/yum/sqlitesack.py", line 209, in _loadChangelog
    "WHERE  pkgId = ?", (self.pkgId,))
  File "/usr/lib/python2.5/site-packages/yum/sqlitesack.py", line 50, in newFunc
    raise Errors.RepoError, str(e)
yum.Errors.RepoError: database disk image is malformed


Expected results: changelog from the Tcl package


Additional info: