Wanted to reactivate this thread, in case anyone else was still having this problem, because I certainly am.
The reason I'm bringing it up again is that I've acquired (through purchasing in LIT format from Fictionwise.com and converting with ConvertLIT 1.5 and 1.8) an LRF copy of the
Dragonriders of Pern trilogy that appears to cause the bookmarks-and-collections erasing behavior, pretty much on demand.
1. Load the book on the Reader (my PRS-500) with Sony e-Book Library.
2. Disconnect the Reader's USB cable and let it get to the menu.
3. Open the Pern book and read. You can even view one page.
4. Connect the Reader and open the Sony software.
5. One of the following will happen:
5a. The Sony Library software will lock up trying to recognize the Reader.
5b. The Sony Library session will go off perfectly, allowing book copying, etc.
6. Upon disconnecting the Reader's USB cable and letting it try to bring up the menu, the reader will take several times longer than normal, and come up with no bookmarks, no collections and no "continue reading" point.
If anyone's interested in working through the problem, either from ConvertLIT's POV or any other, please e-mail me at echoloc8{at}usa{dot}net, or reply here.
-Rich