[gwhite]

Please don't think that I joined this forum to moan, as that's not the case, but I do wish that I'd known about this resource before my problems began.

My PRS300 was a gift and I had no problem authorizing the reader library and installing the Aobe reader. The books purchased read fine but my problems began when trying to read files bought in pdf and other compatible formats which were transferred from various discs. Sony support suggested various options including doing a "workaround" consisting of dragging and dropping files from the disc directly into the "book" file on the reader. This appeared to cause a loop with the reader unresponsive to the on/off control. A hard reset was then advised and I redid the whole authorizing procedure once more. Nothing worked however and I swapped the machine.
The second machine did work but all files, apart from those purchased, when transferred from the Reader Library or Adobe Reader, did not maintain font size, and even though the zoom function worked the print was minuscule. I again consulted Sony support. I un-installed the Reader Library and Adobe Reader reinstalled but now found that the reader library wouldn't open. After being advised by support to clear all temp files and finding the same result the previous workaround was suggested and again the reader went into a loop as before.
Now while the support people were trying their best to help, I was continually told (by four different people) that they had never heard of such a thing and they would have to consult. Cost me a fortune and two weeks in time and in the end I returned the reader. The pity of it is, I loved the thing and would have wished to keep it. Sorry for the long story but perhaps someone here has the solution. I would love to buy another at a future date.