Just a warning here; everything was working like a charm on a Nook build 1002, with 2.4.1 softroot installed.
I decided to update some apps via Nookmarket. All apps updated as expected, UNTILL I wantwed to update ru.launcher.
After trying (which gave an error), I was stuck with a screen saying home on the top-left, showing the time and a black screen. After a few minutes I get an error (Sorry! Activity Launcher (in Application Launcher) is not responding.)
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Rebooting did not help. Removing battery did not help. Pressing the on-button for 20 secs did not help.
The SD-cards were not recgnoized when connected via USB to my computer.
The thing that did work, was going back to the 1.4 software and the installing the softroot again. My Nook is now running smoothly again, but beware that the latest ru.launcher does not go well with 2.4.1
(I read somewhere that other people are also experiencing this).
I will not try to reproduce....