The address books in Pegasus are a long-recognised weak point in an otherwise superb program. For many years a rewrite has been on the cards. However, it has strangely always been overlooked in favour of other new features.

With the impending new mail store, perhaps David is embarking on a programme of re-engineering the basic blocks upon which Pegasus is built and we can but hope that the address books are to be revised sooner rather than later.

In the meantime, I suspect that all you can do is break your large address book into several smaller ones.

When I switch autocomplete in addressbooks on, and the address I am typing is not found in one of the addressbooks, reaction to my typing gets very very slow. The computer almost freezes. This behaviour started with V. 4.51 and it is still present in 4.52. My addressbooks contain several hundreds of contacts. I found out by trial that the size of the addressbook matters. The larger the addressbooks the slower it gets. With my addressbook it is almost unusable because it freezes Pegasus for nearly a minute. 

I would like to know if David is aware of this problem and if there is any solution around (but not switching off search in addressbooks)

Werner