one particular website gives a 404 error but i can open it in internet explorer
I used to be able to visit the Especially Yours website and click on any item and not have a problem. Now no matter how I get to the website I end up with a 404 error. I've had several people try to get to it and they've had no problem. I also was able to load the site through Internet Explorer with no problem. If I click a link in an email it will initially land on the site then immediately roll to a 404 error page saying it can't find the site. I have gone through and looked at all of my security settings and have set them to allow cookies and popups for the site but still it will not load. I went directly to the site by typing in the URL and it allowed me to land on the main page. But the minute that I click on a specific item to take a closer look it allows the page to pop up and then automatically roll to the 404 error page. This has become very frustrating because I primarily use FireFox and I don't using Internet Explorer anymore.
Re: one particular website gives a 404 error but i can open it in internet explorer
Firefox sometimes caches the results of page not found errors. To reload a page bypassing the cache, you can do either of these:
Shift+click the reload button
Do either of those help?
In your "More system details" information, you have a duplicate Flash player (and 3 Shockwave for Director players). This might not be relevant to that site, but definitely is worth cleaning up. Check out this thread for more information: Plugins up-to-date but still getting the Update plugin tab.
You can remove all stored data from a specific domain via "Forget About This Site" in the right-click context menu of an history entry (Show All History or History sidebar) or via the aboutermissions page.
Using "Forget About This Site" will remove everything like bookmarks, cookies, passwords, cache, history, and exceptions from that domain, so be cautious and if you have a password or other data from that domain that you do not want to lose then make a note of those passwords and bookmarks.
You can't recover from that "forget" unless you have a backup of the affected files.
It doesn't have any lasting effect, so if you revisit such a 'forgotten' website then data from that website will be saved once again.