Sophos Antvirus is not running

I get a message that Sophos AV is not running then when I check the log the following messages appear:

2012-11-26 10:24:13.000 AM kernel[0]: Sophos Anti-Virus on-access kext activated
2012-11-26 12:24:54.597 PM SophosAutoUpdate[9265]: AlreadyRegistered
2012-11-26 12:24:58.157 PM com.apple.launchd.peruser.501[423]: (com.sophos.uiserver[9218]) Exited: Killed: 9
2012-11-26 12:24:58.157 PM com.apple.launchd.peruser.501[423]: (com.sophos.uiserver) Throttling respawn: Will start in 4 seconds
2012-11-26 12:25:01.957 PM sudo[10057]: root : TTY=unknown ; PWD=/private/tmp/PKInstallSandbox.Imf7h5/tmp ; USER=rob ; COMMAND=/bin/launchctl load -w /Library/LaunchAgents/com.sophos.uiserver.plist
2012-11-26 12:25:11.847 PM com.apple.launchd[1]: (com.sophos.intercheck[4016]) Exit timeout elapsed (20 seconds). Killing
2012-11-26 12:25:15.847 PM com.apple.launchd[1]: (com.sophos.intercheck[4016]) Job has not died after being killed 4 seconds ago. Simulating exit.
2012-11-26 12:25:15.847 PM com.apple.launchd[1]: (com.sophos.intercheck[4016]) Simulated exit: <rdar://problem/9359725>

Please fix.