Hi,
Have you checked for parasites (spyware, adware, hijackers, optimizers,etc)? Usually when students and faculty start reporting the "forbidden" page errors, it is often due to a parasite, particularly since it happens with IE and not non-IE browsers.
The other problem might be due to a recent Windows update. This is a tip posted on another CMS's website:
HTTP 403 Forbidden or Access Denied Errors
When trying to log in, some users have reported getting "403 Forbidden" or "Access Denied" error messages.
One possible cause is an Internet Explorer 6 update installed by Windows Update. Some users found that this problem could be resolved by changing an Internet Explorer setting:
- In Internet Explorer, from the Tools menu, select Internet Options.
- Click the Advanced tab.
- Under Browsing, clear the checkbox for Show friendly HTTP error messages.
- Click OK.
- Restart the Internet Explorer browser.
Hope this helps...
Cheers,
Bob