[2.1] 600/?: slows menus after insertion of SD-Card

[GoogleCodeExporter]

Your model / PRS+ version?

PRS-600

What steps will reproduce the problem?
1. Factory reset
2. Install PRS+ 2.1.01a (
3. 2381 books on SD card in LRF (converted with FB2 to LRF converter, 
http://www.msh-tools.com/ebook/fb2lrf.html). Card is 1Gb Transcend 80x.

What is the expected output? What do you see instead?

Menu navigation is 3-2 times slower then with PRS+ 2.0.18. 

Thank you!

Original issue reported on code.google.com by [email protected] on 30 Jun 2012 at 7:47