I originally raised my issue under Malware Removal (http://forums.whatth...er_t112114.html)
Having followed the suggestions by LDTate there is a general improvement but I am still experiencing the original issue which is now thought not to be malware related.
At first on bootup my IE (7) sessions are OK, but after a while the display and updates of pages seems to slow down.
eg it takes ages to connect to an entry returned from a google search, or allow navigation between boxes on a form to be completed.
This also seems to start affecting the PC generally. Once I have shutdown IE and made sure it is no longer running under task manager the situation seems to improve. If I restart IE the situation will reappear.
Viewing of programmes via on-demand tv players ( eg http://www.bbc.co.uk/iplayer) suggests that the problem is not with the internet connection itself as a programme will be displayed with minimal interrupt even accounting for the poor line speed I have available.
The IE AddOns are still disabled and the java cache was cleaned.
My test is to access a particular web page from my favourites and then try to follow a link on the page.
The initial link from favourites is displayed almost immediately ( with the phishing filter selector being displayed each time, prob best to select off for now). When I try to follow a particular link IE seems to stop and the progress bar moves extremely slowly, or it resolves quickly with a page saying that the URL is not available on the site. Once IE is in this frozen state it needs to be closed.
Having skimmed through a similar titled topic there was mention of issue with asp.net which is installed on this PC, but perhaps a red herring and nothing to do with my issues.