Does your host use load balancing on its servers? Do you see any number other than zero in the following stats on the admin panel index page:
Code:
Pages : 0 Entries
Index : 0 Entries
Keywords : 0 Entries
Temporary table : 0 Entries
With load balancing and all zeros, PhpDig does not understand how to connect back to index. See
this thread for a related solution.