On 11/12/2012 6:25 AM, Noreen wrote: > Thank you all for your replies. I have down-loaded Ad-Block Plus and it does > seem to have stopped the annoying ads. Sometimes it still leaves an > 'invisible' rectangle but the majority, that flickered so irritatingly, have > disappeared. > > Many thanks, > > Noreen > > In Firefox go to TOOLS/ADD-ONS/EXTENSIONS then hit the MORE button on AD-BLOCK if you now hit FILTER PREFERENCES a box will open giving you the option to add more add blocking filters, I personally have EASYLIST & FANBOY's filters installed & even though I have "Allow some non-intrusive advertising" checked I dont have any trouble with popups at all, FF/AD-BLOCK combo does a great job of blocking intrusive ads but allowing essential popups through Graham