See this too:
The paper works but it would wear down after sometime if you removes the cover often. It would also cause extra stress on the cover latches if it is too thick and break the latch. It happened to me. I dropped it a few times too causing the damage. Need to glue it back.
Bottom line is the problem is the result of unstable power supply. Caused by either
1) contacts to battery
2) contacts to sd card
If it was an 'unstable power supply' the screen would flicker - it is more sensitive to changes in voltage than anything else.
Removing / reseating the micro SD and securing it with tape or extra bits of paper cures it for most. Randon (sic) restarting due to the microswitch switch is because the battery cover is broken.
I have had it myself once my old 8500 became a bit worn - sliging it into my pocket would switch it off. The post you mentioned has 2 issues, not one, and there is no evidence that the two are linked - I have never had the micro SD issue and can find no other comments that it is caused by the 'power supply' - simply that the SD card itself is loose.
Edited by Mysterious Stranger, 24 July 2008 - 03:34 AM.