Just for your information CCleaner and WinPatrol are able to clear specific cookies, there are probably many more programs that have the same ability.
The Avast forum also only uses two cookies - avast.com and forum.avast.com
Thanks Graig, I really appreciate your helpful input. I've ended up installing an add-on for Chrome (Edit ThisCookie) to do want I wanted with cookies in the future. This provides the ability to drill-down to site-specific cookies which is already native to Firefox in the first place. Unfortunately in my haste I've ended up deleting all cookies in my default Pale Moon browser because I wanted to make sure that it was true that Avast does not support Pale Moon so I ended up deleting all the cookies. Same thing for Chrome and IE, but I rarely use these browsers. Thankfully Firefox has the ability to drill-down to site-specific cookies so I'm all good with Firefox but I'm now using Pale Moon because of the direction Firefox is going as of version 42 which is becoming more and more like a clone of Chrome unfortunately. I will now be able to drill-down in FF (as before) as well as Chrome and will be able to delete just Avast cookies in the future when Avast does this again. As far as IE is concerned this browser has a protect "favorites" cookies setting so I can just remove the Avast forum from my favorites and deal with their cookies this way in IE. Unfortunately this time I didn't think about doing this so I've lost all my cookie settings in IE as well as Chrome and Pale Moon which will cause me to need to be addressing logins and security settings for many months as I run across them (as was the case the last time this occurred). I've already spent over 2½ hours addressing some of the more important sites that need cookies set. Some of the security setting are very cumbersome where I have to have codes sent to me, also there are some sites that I either don't have the passwords or ID's for and in some cases resetting the passwords etc doesn't even work so I cannot even get into these sites without signing up as another user and in some cases I really want to keep the userID already have but can't do this. Very frustrating when sites do this like Avast does by not addressing their cookies responsibly. Well again, now I'll be able to deal with it better, but that doesn't help me in the situation I find myself now.
I've checked these apps out that you mentioned since at one time I was interested in being able to block all program updates (or at least warn me if this is occurring) and I'm not sure but MAYBE WinPatrol provides this.
Do you use either or both of these apps?
Do you know if WinPatrol has the ability to intercede when applications might attempt to auto-update?
I've had Avast set to not update, but sometimes Avast will ignore this setting. Also I do not want FF to update either, but I think at least FF honors settings that users have and do not just over-ride settings like Avast will do sometimes unfortunately. Avast will use the excuse that it involves a "security issue" when they will sometimes simply ignore user settings and do an upgrade regardless of what the user wants.
The Avast forum also only uses two cookies - avast.com and forum.avast.com
Well actually Firefox lists 8 cookies for the Avast forum:
Avast.com - locale2
Avast.com - IDT2
Avast.com - avastComGiCountry
forum.avast.com - forumavast.com
forum.avast.com - PHPSESSID
ui.ff.avast.com - userid
ui.ff.avast.com - userid
ui.ff.avast.com - userid
In the case of the Chrome add-on the last 3 cookies are broken down into more detail:
avast.com - s_fid
avast.com - s_nr2
avast.com - s_vi
Check out the attachments I posted in my reply to Bob regarding this.
Of course as I posted before, the Avast forum had 22 different cookies in FF when I checked before deleting them when FF (and all the other browsers) failed to allow me to login to the Avast forum. So clearly the was a lot of "junk" cookies left behind by the Avast forum, some of which most likely was causing my issue logging into the forum.