Submitted by: stat quant; Assigned to: Arun ; [R-Forge link](https://r-forge.r-project.org/tracker/index.php?func=detail&aid=2531&group_id=240&atid=975) raised [here](http://stackoverflow.com/questions/14604820/why-does-this-posixct-or-itime-loses-its-format-attribute#comment20649900_14604820)