On interface FastEthernet0/7 Your reauthentication time is set to 7200 seconds which is by default is 3600 seconds.which means that reauthentication will happen every 7200 sec.Your quite mode timing is 5 sec and default is 30 sec.Try using the the default settings for reauth,retransmission and quiet mode timers and check for the issue.Also check for the Dot1x configuration.
refer the following url for the configuration guide:
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...