BleachBit cannot delete "gnome-system-monitor........" file (socket file)

When I run the BleachBit, I see the error message below :

Unsupported special file type: '....../.cache/gnome-system-monitor.physics.2031380257'

It seem to be a bug, so I updated from "BleachBit 0.9.1" to "BleachBit 0.9.3beta" today (11/19/2012).
And I run it again, but it still does not erase "gnome-system-monitor........" file in ~/.cache directory.
The file is a socket file and it seems not be able to delete socket files. Please fix it.

The file details are below :
>ls -l
srwxrwxr-x 1 GrName OwName 0 Nov 18 12:50 gnome-system-monitor.physics.2031380257

Thank you!