Kaspersky Internet Security 2010 will block my incomming email.

I have installed Kaspersky Internet Security 2010 on a pc and when I open my Mozilla Thunderbird mail program Kaspersky will turn off and it will block my incomming emails from
downloading. I installed kaspersky 5 months ago and didi not have any problem.
I tried to download a big file and that is where the problem started. I scan the computer for a possible virus, use malwarebytes and spybot but came out clean.

Please advise.
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You should check to see whether Kaspersky has the proper configuration for checking emails.  You might need to remove and re-install Kaspersky.

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Disable 'checking incoming' or similar section in Kaspersky. Because kaspersky will check all incoming connections before its getting into computer.
Maybe a recent update in Kaspersky AV blocking incoming mail.
--You can use ESET AV or Microsoft Security Essentials as AV program. Both are very good and lightweight AVS.

I'd second the nod for ESET NOD32.  That's the best AV on the market.  Very small footprint and best detection.  If you're going to pay, you might as well get the best.

For free: Avira makes the best protection, but last time I used it there were prompts for donations.  Avast is another good free tool.
MikeIT ProfessionalCommented:
ESET NOD32, bar none!
chenzoviccAuthor Commented:
I did remove and re-install and that fix the problem.

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