My computer seems to have developed a mouse problem in the past day or so. When I use the left button it is very slow to respond - double clicking doesn't work at all and I have to hold the button down for one or two seconds for it to work. For example to open a thread on ASF.
I haven't changed any settings and it was working fine before. The mouse pysically seems fine - it's just slow to respond. Right button is working as usual.
I've done a full system scan with Vet anti-virus (paid up subscription with automatic updates) and it found nothing. Also ran Spybot and Ad-Aware and they found a few minor things that have been fixed.
I've tried changing the double click speed setting since the problem developed and it hasn't helped.
What to do now?