Can't log in at home anymore

I have to take my laptop to a wiFi spot or to work to login since last tuesday. Second life claims it is an ISP problem and My ISP swears they are not blocking Second life.
I have an art gallery to run and am not getting any help anywhere.

I get the can't resolve the DNS error when I attempt to login from home. I get the grid status ans can surf anything on the net.

Desperate, for any help!

If running Windows XP try flushing the dns.

Start> All Programs> Accesories> Command Prompt

type: ipconfig /flushdns

hit enter. That might work. If not check your router setting to make sure it isn't blocking it and even check the windows firewall to make sure it isn't blocking it.