I don't know if this is limited just to me, but when I get PM (personal message)-ed I don't get any notifications? I sometimes find requests for phone number and other misc things in my inbox which are months old.

Anything can be done to rectify this?

This is a known bug with CSv2.0 (which is this version). It's resolved in their latest ver.

The workaround for this is to ensure you get PM notifications via your email (like those post reply notification subscriptions). That way, when someone PMs you, you'll get an email notification and you can just click on the link in the email to get to your PM message.