Safari Stopped working

[demendonca]

Hi
iMac Intel OSX 10.4.9

About ten hours ago Safari just stopped.
Safari was only application running and I hadn't done anything new/different before this began.
Here is what I tried on my own.
1. closed and restarted Safari, rebooted, ran OnyX and emptied Browser cache Download cache Browser History and recent Searches.

2. Unplugged modem waited a few minutes, plugged back in (Scientific Atlanta "WebStar"). This is a cable hookup.

3. Called my ISP and had them confirm valid IP, modem working, and could ping me.

4. Verified and Repaired Permissions

5. (getting desperate) Updated OSX to 10.4.9 and repaired permissions.

Running Network Diagnostics shows that I have green light on BUilt-in Ethernet, Network Settings, and ISP
But Internet and Server have failed.

Network Configs
Location: Automatic
Show: Built in ethernet
using DHCP
DHCP Client ID: 0
DNS Servers 4.2.2.1 and 4.2.2.1

Firefox won't work either.
BUT
Turning on Airport and "borrowing" my neighbours connection I get BLAZING Safari and Firefox, way faster than anything I have ever had with my cable connection.

I am new to Mac and Computers, everything I have tried has been gleened from this forum.
I am at a loss. And the little ball on my Mighy Mouse just stopped working.
I hope I have given all the right info.
Thanks

 

[Mr. MacBook]

I have help for the mighty mouse.

Take a lint-free cloth and slightly moisten it with rubbing alcohol or water.

Dab at the ball and make sure you clean it, roll it around and clean all the little particles

 

[demendonca]

Thanks Mr.Mousebook
Mouse works great now.

 

[Killyp]

The issue here is clearly with your internet connection, or possibly even the modem. If it's saying it's connected, and yet it can't feed your iMac anything, then that's possibly the root of the fault.

I'd talk to your ISP, they can run you through the usual stuff, it's not a problem with your iMac (which is a shame, otherwise we'd probably be able to fix it right here right now).

 

[demendonca]

Thanks Kill
I will speak to them again and post back.

 

[demendonca]

developments

Just spoke to my provider and we went through some steps.
One of which was rebooting. Safari connected for a few minutes and then stopped working.
The technitian concluded it was the problem was the ethernet card.
The computer seven months old.
What does this mean?