Cached page link not showing

Searching result for one of my site not showing cached page link

[ramachandra]

Since last week I have noticed that cached page link disappeared in search result for my site, not only in MSN but also in Yahoo and Google too. Can anyone tell me what might be the reason, and when this will happen?

Thanks

[ramachandra]

I am guessing might this be the reason, today if I type www.mydomain.com its displaying "Access Denied! You are not authorized to access this web service".

Any comments or suggestions?