Since a couple of recievers did not have problems (eTrex, Geko 201, GPAMAP 60, Explorist 100) using EGNOS signals it yould be *very* abnormal the this is a regional issue. Maybe it is an issue with EGNOS.
Since EGNOS is fully deployed and pre-operational the signal is send continuous. According to the EGNOS news-letters, the signal is *NOT* a testsignal! - But this doesn't matter, since other revievers use the signal - it must be an bug in the Vista firmware!
Atti