Some things you could check maybe?
Internet Options - Connections tab - Never dial a connection selected?
Set Telephony in services to disabled.
If using FF type about:config in the address bar and set "network.autodial-helper.enabled" to false.
Noscrpit was causing the garbled text here.As soon as I allowed a "com.com" through noscript the text cleared up and the Becks Beer ad appears.FF3 here.
Maybe some FF users having probs can run through the image testing below which may pick something up?
FF Image Test
For anyone interested Give Away of the Day has a Driver Magician on offer.
Don't know much about this app and may give it a run.
GAOTD Driver Magician 18 Hours
Received the below email today which contains a UPS_letter.doc which is actually an exe.
It will install Antivirus XP 2008, which is a rogue app, if executed.
Virus Total - File UPS_letter.doc.exe
Rogue.Advanced.Registry.Optimizer
Date spotted:
First seen on 2008-01-23.
Last seen on 2008-09-28.
Detection statistics:
This object is 0.01% of all objects detected.
16,452 instances detected worldwide.
Malwarebytes Database