I am running XP with Outlook 2003. I have many Categories set up in my
Master Category List and most of my Contacts are assigned at least one
Category, some Contacts have two Categories.

When I view my Contacts under the view 'By Category' I used to see a view
showing each individual Category with a list of all the Contacts underneath
each section. Any contact with two Categories assigned to it would appear
under the two different headings. This was fine.

However it now seems that some Contacts who have two Categories assigned to
them are not being listed under both of these Categories - but rather under a
new heading "Category 1,Category 2". In other words Outlook is creating
additional groups of multiple categories for Contacts that have more than 1
Category.

When I open one of these problematic Contacts and re-select the Categories,
I can re-save the contact OK and the problem goes away i.e. the Contact can
be seen under the two separate Category headings. However the problem then
re-appears the next day when I re-open Outlook.

Any ideas welcome!