Vista and Ebay Toolbar

IE7 and Windows Vista do not seem to like ebay toolbar, I have upgraded from
XP to Vista RC1 and since than ebay toolbar does not work properly it did
work OK with XP and IE7. I am running this in the UK if I leave the toolbar
set to ebay.com (US) it seems to work OK but try and change it to ebay (UK)
it causes Internet Explorer to close. If I click on My Ebay to log in it
lets me do that but when I search I get all the US items for sale if I do
find amongst that a UK item I want and I click Watch this item it logs me out
and adds it to the Guest List. When I try to log back in Internet Explorer
closes and restarts at its home page, go to ebay and the whloe process starts
again. I have tried to disable the toolbar in the add ons but this does not
work to solve the problem it only works if I remove Ebay toolbar from my
system.

Anyone had this problem where they managed to solve it, wifes not happy as
she doesn't get her alert reminders, can some help stop the nagging.