When I go to a web page I get this Do you want to allow the web page to access your clipboard? If you allow the site can read what you have copied and pasted If I disable my copy paste does not work.Its set a prompt Thank you
I would suggest updating and run Spybot search and destroy and Avg antispy click hereclick here click here and the update and install click here the latter will stop most spyware actually installing on your system (unless you give it permission of course)
Just a thought, have you only recently started using IE7? and if so did you have this same problem in IE6. If necessary you can revert to IE6 simply by uninstalling IE7 in Control Panel Add and Remove - this would automatically revert you to IE6.