BT VPN issue

On Sunday 10 January many of my contacts in the area lost their ADSL
connections for about 3 hours. In fact most reported Showtime but no PPPoA
connection. Evidently BT had to replace something affecting London and
Colchester

Since then I've seen problems setting up some VPN connections. These are
all LAN-LAN using Vigor 2600 and 2820 routers. One failure is between Diss
(ISP=BT) and Long Stratton (ISP=Zen); the other failure is between Yarmouth
and Norwich (ISP=BT in both cases)

Has anybody else seen a similar problem?

TIA

--
Graham J