Why does MsMpEng.exe take 46 seconds to scan one particular single web page?

[Guest DonniDave]

One and only one web page (reputable site) takes 46 seconds to load with high MsMpEng.exe CPU hog of (around) 51%. This one web page has been tried in IE9, FF10, Chrome17. This only appears to occur on one web site. Running Vista Home Premium (everything auto updates to latest) on Dell Inspiron 1545 3GB RAM.

Copied the source file into a text file and saved and closed it then tried to reopen it. MsMpEng.exe scanned it and the LOG file indicated it was an "Expensive file". The LOG file extract shows:

!WARNING

Expensive file

File Name:C:\Users\Dave\Desktop\camping_and_caravanning_club_home.txt->(SCRIPT0004)

File Size:400278

Time:41371

Container:No

Metric:CPU

CRC4:3967364889

CRC8:1598593604

CRC16:4120809658

CRCHeader:1187327743

CRCFooter:1953592370

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No apparent indication in the LOG file of any issues with the actual web page when loaded - but each load takes around 46 seconds to load.

The web page: http://www.campingandcaravanningclub.co.uk/

 

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