In Netscape Communicator (or Navigator), you can force a reload of the PFRs
by holding down the shift key while clicking the Reload button on the
Communicator toolbar. This might take a moment to reload and redraw
the screen with Telugu text.
The reload of PFRs is needed because,
the DocLock protection system doesn't allow PFRs created for one site
to be used for another site. Next release of PFR creation tool allows
multiple sites to be specified at the time of the creation of the fonts,
and until that time you need to force the reload of the PFRs.
This problem doesn't occur with Internet Explorer.