Wouldn't I have to enter my password everywhere everytime if I deleted the cookies ??
Yes, but only the first time you go back to each of the websites that require a password. Sometimes when flaky things like this happen its a good idea. If a simple reboot doesn't solve the problem then deleting your "History", clearing your "Cache" and deleting your "Cookies" followed by a re-boot will do the trick.
If that doesn't work then doing it all AGAIN, immediately followed by a "software update" which is immediately followed by ANOTHER re-boot will often do the trick.
If all of that doesn't work, then its best to delete the program and
download & re-install a new copy of the program from scratch. . . the downside to that is
you lose ALL your bookmarks, etc.