My email used to automatically save contact information upon reply. It has stopped and I can't find the setting to check it. Can someone please tell me where it is? Thanks.
This is the autocomplete cache that comes up when you type names in the To field? It's enabled in Tools, options, email options in outlook 2007 (suggested names option, near the bottom of one of the dialogs).
however, it might just mean the cache is corrupt or outlook is not closing cleanly. See autocomplete cache