"Failed to open the database on disk. This is probably because the version was bad or there is not enough space left in this domain's quota".
It doesn't save notes.
Confirmed in Webkit r30053.
This is by design: this feature is no longer compatible with shipping versions of Safari. Perhaps we need to add a workaround for nightly builds to work?
I think it would be fine to hack something in that's specific to nightly builds.
The best place would probably be in WebKit/mac/WebCoreSupport/WebChromeClient.mm and WebKit/win/WebChromeClient.cpp -- each could say "if this is a nightly build and the quota is 0, then set the quota to 5 MB" in the case where the delegate method is not implemented.
Committed revision 30229 and 30230.