If the comments still do not appear:

IE8 -From the Safety menu in the upper right, click Delete Browsing History

Deselect (i.e., uncheck) Preserve Favorites website data, and select (i.e., check) Temporary Internet files, Cookies, and History.

Click Delete.

If the comments still do not appear:

Tools --> Clear private data,
select Cache and Cookies

View --> Reload

If the comments still do not appear:

Tools --> Clear private data,
select Cache and Cookies

Exit Firefox and open Firefox

View --> Reload

If the comments still do not appear:

Empty the cache --> Remove all cookies

Safari --> Reset Safari

Next to "Temporary Internet Files", click Delete files... .

To delete your cookies, click Delete Cookies.

Click Close, and then click OK to exit.