I can confirm that lmce cannot identify inserted discs anymore. I live in sweden.
This has happened about 1,5month ago too. And suddenly it started working again.
As far as I know lmce do not use Amazon to detect inserted dvds.
Instead EMI (External Media Identifier) it use windows metaservices a service that Windows Media Player use to identify inserted discs which basically is a proxy to other commercial databases available on internet.
The way it work is by calculate a dvdID(crc). The part that we have in a binary only app.
They way MS calculate dvdID is not generally available and was contributed to pluto back in the old days by an unknown contributor.
The code circulate on hacker forums. So far I have been unable to get hold of it. A guy in xbmc forum claim to have it but won´t share it.
Without looking into this with a sniffer I guess MS have change to a newer protocol or some other minor change.
Me and possy looked into this the last time we experienced these issues.
In webadmin it´s a whole other story. It use Amazon.
As for EMI.
this is an example.
I insert "BadBoys 2"
Then EMI send the following, http://metaservices.windowsmedia.com/pas_dvd_B/template/GetMDRDVDByCRC.xml?CRC=1a4a98d8e0a3ef3b
Tried above url and it work fine. Return a XML with info about "Bad Boys 2".
It´s the CRC part that we are unable to calculate.
As far as I know the crc part include filenames, some id string that is fetched from the disc and probably a lot of other things.
I don't know enough about the issue to know if a workaround will be possible at this time.