This is the error ?

Exception in process of pool 
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT: == EXCEPTION ==
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT: <type 'exceptions.ValueError'>:too many values to unpack
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT:   File "/opt/dirac/pro/DIRAC/Core/Utilities/ProcessPool.py", line 483, in process
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT:     self.__taskResult = taskObj()
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT: 
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT:   File "/opt/dirac/pro/DIRAC/DataManagementSystem/private/RequestTask.py", line 388, in __call__
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT:     ret = self.handleRequest()
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT: 
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT:   File "/opt/dirac/pro/DIRAC/DataManagementSystem/private/RequestTask.py", line 449, in handleRequest
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT:     subRequestFiles )
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT: 
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT:   File "/opt/dirac/pro/DIRAC/DataManagementSystem/private/RemovalTask.py", line 119, in removeFile
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT:     bulkRemoval = self.replicaManager().removeFile( lfns )
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT: 
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT:   File "/opt/dirac/pro/DIRAC/DataManagementSystem/Client/ReplicaManager.py", line 2044, in removeFile
2013-03-12 19:42:16 UTC DataManagement/RemovalAgent EXCEPT:     for lfn, reason in res['Value']['Failed']:

If it is, then the fix is not correct. The problem is that res['Value']['Failed'] is a dictionary. It should be rather:

for lfn, reason in res['Value']['Failed'].items():

or

for lfn in res['Value']['Failed']:
  reason = res['Value']['Failed'][lfn]

Can you please check and correct as necessary