dE/dx for Run XI pp 500 GeV after fixing tables put in MySQL (on 03/31/11) has been checked.

The resolution looks o.k.  

But there is some extra band in dE/dx versus p plot for log_10 (p) > 0.5 between charge |q| = 1 and charge |q| = 2 mass hypothesis.

I  don't think that this is a discovery of particle with fractional charge but I do think that there is a problem with calibration.

As a summary:

  - calibration is not extremely bad, but

  - don't pretend to make discovery with the calibration,

  - it is needed  to understand presence on extra band in dE/dx versus p distribution.