[also posted in New fast data logging sketches]
I started a google document to give some overview on ways to troubleshoot SD card usage with Arduino.
“pls have a first look, put your comments in that and then we can decide to create a (sticky?) post in Arduino:Storage to promote this document and the ongoing work on it. As soon as we collaboratively decide, that it`s kind of ready for the wiki, we can copy or link it there. Maybe over time we can identify some named editors keeping the edit access and everyone else can only comment. Let´s see how this works, it´s also the first public worldwide community document editing for me 
And everyone please feel free to edit, modify, restructure whatever you want in this document. In the worst case we can revert to any previous version thanks to the cloud :o)
As this document is stored under my account @ google I hereby reserve all rights to remove any inappropriate, abusive or whatsoever unhelpful stuff that may come in; but of course the technical content remains owned by the community.”
https://docs.google.com/document/d/1lGFHpHPfvfGxSzjU8yo5DBLjO2pM0Bl7nwp85h4pftI/edit?usp=sharing
[gdocs id=1lGFHpHPfvfGxSzjU8yo5DBLjO2pM0Bl7nwp85h4pftI type=’document’]