Search Engines links do not work

Recently after I did updates of MS Office 2007 and updates of Firefox latest
version my IE 8 and Firefox serch engines result links do not open and both
browsers are stucked and only I am able to close throgh Task Manager. First
problem I found was my old msn email account was not able to access through
otutlook. A couple of times I tried system restore but fail. Then I
installed Outlook connector now my msn email account is working with the
Outlook. I also found that all the install updates of Office 2007 is
appeared again to install it but I did not install it because I do not like
to have problems in Outlook.

Right now my problem is search engines links do not work.

My OS is Vista Ultimate SP II and CPU is Intel Core 2 Quad Q6600 2.40 GHz
and DDR3 2.00GB RAM.