I've had this problem too but have found that the hanging is due to read timeouts or some bad URLs.

For example, this URL will hang it up http://www.mahatma.org.in/. If I use Internet Explorer, it takes forever and eventally comes back with a Read Timeout error.

Once you remove these bad links, you shouldn't have any problems. However, I think the verify script needs to handle this by timing out somehow as it appears to never return when it encounters a link like that.

Edit:
I have emailed GT support. The above scenario gives 504 errors and it doesn't look like Links is handling these status codes at present.

More info on 504 errors: 504 Gateway Timeout
The server, while acting as a gateway or proxy, did not receive a timely response from the upstream server specified by the URI (e.g. HTTP, FTP, LDAP) or some other auxiliary server (e.g. DNS) it needed to access in attempting to complete the request. Note: Note to implementors: some deployed proxies are known to return 400 or 500 when DNS lookups time out.

Regards,
Peter Puglisi
www.ausfreedom.com
Ultimate Freedom is our game.