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Sophos A/V Home Edition update on July 17th cause OS X Lion to hang

trudheim

Hi there,

Sophos did a self-update today, and it took my primary system (MacBook Pro, OS X Lion fully updated) out completely. It grinds the system to a total halt, spinning multicolour disk, nothing works. Hard power off, have been in through the recovery partition, done a repair disk and repair permissions, upon next boot - as soon as Sophos starts, it takes at most ten seconds and then the system is totally hung again. No app works, can not log in remotely, nada.

How on earth do I recover from this without a clean install?

/Anders

:1008211


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  • 0

    Update: Clean re-install of Sophos still produces the exact same problem - system locks up if you enable both OnAccess Scanner and Live Protection. I'm leaving Live Protection turned off as the OnAccess Scanner is the more useful feature (at least until this is resolved by Sophos).

    Sophos can contact me directly if they need data about the system in order to track down the root cause.

    :1009808
  • 0

    Hello Anders,

    while I can't help you with the issue I want to give some clarification. Live Protection is an extension of (on-access) scanning and basically works as follows: the scanner, following its strategy, matches certain characteristics of the file being scanned with the detection identities in the database and IDE files. If a match is found the identity can either give an immediate decision ("good" or "bad") or instruct the scanner to dig deeper until a decision is reached. With Live Protection certain identities additionally request a lookup in the cloud if at a certain point there's still no definite outcome. The lookup is done via DNS by sending a digest of the characteristics as part of the query. The response then determines the final outcome.

    Thus on-access isn't the more useful feature but the primary feature as if it's off Live Protection doesn't come into play (in other words, disabling on-access scanning also disables Liver Protection).

    Christian 

    :1009816
  • 0

    I'm having the same issue, after running for awhile my iMac screen goes blank and sometimes will not come back up properly, even after a hard reset.  

    :1010152