Janice....you have multiple issues. First...you seem to have overlapping channels(wifi). I am assuming you live in a complex. You can change said channel. Second..it seems that your http images can not load(nsurl). The last issue is with your Apple Address Book Contact List .
The last issue may have came up when shutting down your desktop or sudden shut down...but never mind that.
The file is located here:
UserHome(Home Icon) > Library > Application Support > AddressBook
so...:
Right click the ABCDDB file, then click "Open with other...". Then choose another program(and make it permanent).