I have a Cisco ASA 5510 and have been experiencing problems on a weekly basis. Every Tuesday for some reason I lose contact with the ASA, I CAN ping it no problem, but no onoe can use VPN. To solve this, I restart the ASA and its fine. Well, when I restart it, all the VPN users need to reinstall the certificate. Is there a way for this not to happen? And any suggestions on why it does not respond weekly?