Angela,
Suggestions from YT:
"Usually refreshing helps. But it if doesn't, then maybe deleting your browsing data will help.
Deleting your browsing data:
Internet Explorer 7:
1. From the Tools menu in the upper right, select Delete Browsing History.
2. Next to "Temporary Internet Files", click Delete files... .
3. To delete your cookies, click Delete Cookies.
4. Click Close, and then click OK to exit.
Internet Explorer 8:
1. From the Safety menu in the upper right, click Delete Browsing History... .
2. Deselect (i.e., uncheck) Preserve Favorites website data, and select (i.e., check) Temporary Internet files, Cookies, and History.
3. Click Delete.
Firefox 3 for Windows:
1. From the Tools menu, select Clear Private Data... , and then check Cache and Cookies.
2. Click Clear Private Data Now.
Firefox 3.5 for Windows:
1. From the Tools menu, select Clear Recent History... .
2. From the Time range to clear: drop-down menu, select the desired range; to clear your entire cache, select Everything.
3. Click the down arrow next to "Details" to choose what history elements to clear (e.g., check Cookies to clear cookies). Click Clear Now.
Firefox 3.6 for Windows:
[Same as Firefox 3.5]
Safari 5:
1. From the Safari menu, select Reset Safari... .
2. From the menu, only select Empty the cache and Remove all cookies, then press Reset.
Firefox 3 for Mac OS X:
1. In Firefox, from the Tools menu, select Clear Private Data.
2. Make sure Cache and Cookies are checked, and then click Clear Private Data Now.
Firefox 3.5 for Mac OS X:
1. From the Tools menu, select Clear Recent History... .
2. From the Time range to clear: drop-down menu, select the desired range; to clear your entire cache, select Everything.
3. Click the down arrow next to "Details" to choose what history elements to clear. Click Clear Now.
Firefox 3.6 for Mac OS X:
[Same as Firefox 3.5]
Google Chrome:
1. Click the Tools menu. (the wrench in the upper-right corner)
2. Click Options
3. Click Clear browsing data…
4. Check the boxes for the types of information you wish to delete.
-- Clear browsing history
-- Clear download history
-- Empty the cache
-- Delete cookies
-- Clear saved passwords
-- Clear saved form data
You can also choose the period of time you wish to delete cached information using the Clear data from this period dropdown menu.
5. Click Clear Browsing Data when ready."