SyncEvolution uses a device id (i.e. source URI) with a format that is already being used by Funambol clients: sc-pim-1b6ce05d-a34e-4157-aa77-4a19896b5126. We use the source URIs to determine devices and enable workarounds for all kind of problems with certain clients. Very old Funambol clients didn't send proper DevInf data, so we always use Funambol's SIF format if we see a device that we consider a Funambol client. We could probably use a smarter detection method, or ignore this one rule completely because there aren't any of this broken client out in the wild anymore, but this won't happen before the next major release of Horde. SyncEvolution should really use their own Source-URI naming scheme though, that would solve the problem too.