I am very happily using my iphone 3GS with my fatory bluetooth.

The only problem I have is that it keeps loosing the preset settings. When this happened after about the third time, I set the pre-sets manually (typing name and phone number) and that seemed OK, but again today it all went back to blank.

has anybody else experienced this, and if so, is there a work around??

Same happens to me with an iPhone 4, I solved it by manually entering rather than picking from address book, however it stil gets confused and displays called "mailbox" rather than my first entry. Happy for the moment that my iPhone actually connects and works.

Even when I manually create, it still looses it after a few days.

Not the end of the world as those numbers are usually in my dialled list (as they are the most popular) it would just be nice to use the functionality that is there.