Topic: Slow to resolve DNS for some clients but not others?

[stodge]

I'm running Mitel Networks SME Server 5.6 on an old Celeron 350MHz, with 64Mb of memory. I only have two clients, who use the server to share internet access.

The main problem is that DNS lookups seem very slow for one of the two clients (my wife's PC). My client PC generally resolves addresses for websites pretty quickly, but for the other PC it takes a long time.

Has anyone else experienced this before?

[stodge]

Or is there a way to configure SME and the clients to use my ISP's DNS servers?