Description of problem:
yum updates are failing:
Updating:
 R-core                 i586         2.9.0-1.fc11         rawhide          31 M
Updating for dependencies:
 R                      i586         2.9.0-1.fc11         rawhide          17 k
 R-devel                i586         2.9.0-1.fc11         rawhide          90 k
 libRmath               i586         2.9.0-1.fc11         rawhide          98 k
 libRmath-devel         i586         2.9.0-1.fc11         rawhide         126 k

Transaction Summary
================================================================================
Install      0 Package(s)         
Update       5 Package(s)         
Remove       0 Package(s)         

Total download size: 31 M
Downloading Packages:
--------------------------------------------------------------------------------
Total                                            17 MB/s |  31 MB     00:01     
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test


Transaction Check Error:
  file /usr/lib/R/library/Matrix/include/Matrix.h from install of R-core-2.9.0-1.fc11.i586 conflicts with file from package R-Matrix-devel-0.999375-6.fc11.i586
  file /usr/lib/R/library/Matrix/include/Matrix_stubs.c from install of R-core-2.9.0-1.fc11.i586 conflicts with file from package R-Matrix-devel-0.999375-6.fc11.i586
  file /usr/lib/R/library/Matrix/include/cholmod.h from install of R-core-2.9.0-1.fc11.i586 conflicts with file from package R-Matrix-devel-0.999375-6.fc11.i586
  file /usr/lib/R/library/Matrix/CONTENTS from install of R-core-2.9.0-1.fc11.i586 conflicts with file from package R-Matrix-0.999375-6.fc11.i586
  file /usr/lib/R/library/Matrix/DESCRIPTION from install of R-core-2.9.0-1.fc11.i586 conflicts with file from package R-Matrix-0.999375-6.fc11.i586
  file /usr/lib/R/library/Matrix/INDEX from install of R-core-2.9.0-1.fc11.i586 conflicts with file from package R-Matrix-0.999375-6.fc11.i586
  file /usr/lib/R/library/Matrix/Meta/Rd.rds from install of R-core-2.9.0-1.fc11.i586 conflicts with file from package R-Matrix-0.999375-6.fc11.i586

There are a number of other conflicts listed that I didn't include to save space here, but I think you get the idea.

Version-Release number of selected component (if applicable):


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Additional info: