Please explain a registry change detected by Ad Watch

[hethers]

Hi, Got a query which I'm hoping someone may be able to explain.

Switched on my pc this morning. Adaware Ad Watch fired up as usual but this time it advised that a registry entry had been altered. So looked up the details which are:

08/05/2006 08:51:24> Registry modification detected
08/05/2006 08:51:24>
08/05/2006 08:51:24> Root:HKEY_CURRENT_USER
08/05/2006 08:51:24> Key:Software\Microsoft\Internet Explorer\Main
08/05/2006 08:51:24> Value:First Home Page
08/05/2006 08:51:24> Data:
08/05/2006 08:51:24> New Data:http://www.microsoft.com/isapi/redir.dll?Prd=ie&Pver=5.0&Ar=ie5update&O1=b1
08/05/2006 08:51:24>

Does anyone know what's happened here and is able to explain it in terms easily understood? I'd be most grateful to anyone who can.

Thanks in advance.

 

[hethers]

Yes, I do. However, I checked my update history shortly afterwards (and again this evening) and this particular incident isn't logged - hence my suspicion.

EDIT Incidentally, my default "home" page remains as OcUK. /EDIT

EDIT (again) Sorry but had a call and have got to go out. Will return about 10pm /EDIT

 

[hethers]

OK people. Many thanks for taking the trouble to respond.