Virus's frequently attempt to switch off or negate major virus detectors and firewalls to increase their lifespan and to make it possible to pass information from your pc.
If you check the detailed descriptions of any virus you get you will find a description of its actions on other programs. Uninstall, clean, and replace these programs and life should return quickly to normal.
Although its not unreasonable on a low spec machine to turn off your virus detection while (only) trading its stupid to turn off virus detection when browsing/mailing or to turn off firewalls at any time (not implying that wallace is silly to replace a product if he prefers another).
If you check the detailed descriptions of any virus you get you will find a description of its actions on other programs. Uninstall, clean, and replace these programs and life should return quickly to normal.
Although its not unreasonable on a low spec machine to turn off your virus detection while (only) trading its stupid to turn off virus detection when browsing/mailing or to turn off firewalls at any time (not implying that wallace is silly to replace a product if he prefers another).