Malicious URL blocked / URL:Mal / Google

After Avast update to (6.0.1203)I cannot access Google as it states Network Shield has prevented it. Malicious URL blocked / URL:Mal Never have had this trouble in the past as Google is my home page. Any ideas? (Windows XP Pro)

Infection Details
URL: www.google.com/coop/cse/brand?form
Process: file://C:\Program Files\Alwil Software\Avast5\AvastSvc.exe
Infection: url:Mal

may this is a causality of the new program update didnt happen with me?

Same problem, constant malicious url blocking by avast when using search engine, and to pages so many of them, I think are clean pages. How to stop the constant “threat has been detected” when I think there is no threat? Have to click urls in searches twice now, after the avast warning, to get there–how to stop this? I did scans, everything in computer is clean, anyone have a suggestion? Thank you.

@blueberry

Follow this guide from our expert malware remover Essexboy
http://forum.avast.com/index.php?topic=53253.0
( post the logs HERE and not in the guide )

To avoid using multiple post with copy and paste you have to attach the log`s
Lower left corner: Additional Options > Attach ( Malwarebytes and OTS log ) save OTS log as ANSI

Essexboy will look at the logs when posted…

he is usually in here 08:00pm - 11:59pm uk time

Thank you! Will come back here tomorrow to see your instructions to me. I appreciate this!