Indexing Service Using Network UNC Path

I have a catalog that is created from a network unc share (File Server) and
located on 2003 Web Server running IIS 6.0 and Asp.net 2.0 framework. The
webform queries the local catalog using OleDB provider MSIDXS

"Provider=MSIDXS.1;Integrated Security .='';Data Source='" & CatalogName & "'"

The problem I am seeing is the 2003 File Server cpu spikes to 100% when I
execute a query using the like predicate against DocTitle property. This
seems to indicate the index is out of date and is not using the local catalog
index. I have the performance set to indexing = instant and querying = high
load and have seen scans take place as soon as a file is added or updated.

Is there a way to restrict the query to the local catalog indexes?


Thanks

Dan