Zoom Level Is Not Holding On A Webpage - Windows 7 Support Forums?

i am on a webpage, any webpage, and as i'm looking at the page it can slowly or quickly get smaller and smaller. my zoom will go from my normal 125% setting down to 12%. i reset the zoom and it happens again. this has been an interrmittent problem for the past few weeks. i use IE9. tonight i downloaded firefox to see if the problem would appear there also. it did. so i do think it's a windows is there some way to lock the zoom? what is causing this? my computer is set to download windows updates automatically (not the optional ones).i don't know if it's related, but at times the icons on my desktop get small. when i check i see that it is set to small icons. i change it back to medium icons, and it goes back to small icons. this also is intermittent, and sometimes seems to coincide with the webpage zoom issue, but not always.i sometimes lose my hot key settings for my wireless keyboard. for example, i hite the hot key for mail and nothing happens. this also is an intermittent issue that sometimes coincides with the other issues and sometimes does not.