Microsoft has released an additional update for Internet Explorer, bringing its Web browser to version 5.1.5.

The posting provides enhanced support for http and “resolves all security vulnerabilities” in previous versions of the browser. The update also repairs a vulnerability that may have caused the browser to stop responding, or caused memory problems that compromised computer security.

The update is available for free download from Microsoft's Web site. It is for Mac OS 8.1 to 9.x.