I too got the same error when i installed WAMP5 1.7.1 and tried to see whether my webserver is running or not.
but the solution to this problem that i found was pretty simple. Just open the file httpd.conf In your wamp installation directory (eg...\wamp\Apache2\conf) and search for the following lines:
<Directory />
Options FollowSymLinks
AllowOverride None
Order deny,allow
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