Long wait to delete files if many are loaded

[mantid-builder]

This issue was originally TRAC 7564

Original Reporter: Gesner Passos

I have loaded many files (all files that are loaded inside the LoadLotsOfFiles)

if __name__== "__main__":
  a = LoadLotsOfFiles()
  files = a.__getDataFileList__()
  for f in files:
    Load(f,OutputWorkspace=str(f).split('/')[-1])

Than, after, I selected all of them, and clicked in Delete. It took more than 2 minutes to delete all of them, and i got this strange error message:

Workspace CSP85423.nxs could not be found.
Workspace MUSR00015192.nxs could not be found.
Workspace NewGroup could not be found.
Workspace OFFSPEC00010791.nxs could not be found.
Workspace OFFSPEC00010791.raw could not be found.
Workspace OFFSPEC00010792.raw could not be found.
Workspace OFFSPEC00010793.raw could not be found.
Workspace POLREF00003014.raw could not be found.
Workspace POLREF00004699.nxs could not be found.
Workspace POLREF00004699.raw could not be found.
Workspace SRF92132.nxs could not be found.
Workspace SRF92132.raw could not be found.
Workspace emu00031895.nxs could not be found.
Workspace irs26176_graphite002_QLr_Parameters.nxs could not be found.

This happened in ubuntu 12.04. In windows 7 MantidPlot will eventually crash with Windows trying to send the report of the failure.

[mantid-builder]

@NickDraper (2014-02-14T11:07:58):
bulk move to assigned at the into of the triage step

[NickDraper]

Tried with a lot of files 15 second wait and no error messages