Just wondering, has anyone tried Sophos Anti-Virus on their MacBook Pro ? Is it good ? Does it slowdown your MacBook Pro ?
I actually plan to install the anti-virus on MacBook Pro Lion OS that runs Parallels 7 (Windows 7) as well.
Whether or not you're running Windows isn't really important for determining what anti-virus software to run on your Mac. Either Sophos or ClamXav would work well on the Mac, but it's important to understand that no Mac anti-virus software will protect your Windows installation, whether you are running Windows through Boot Camp or in a virtual environment in something like Parallels. That Windows system will still need its own anti-virus software.
How about flashbacks ? Is this something I need to worried about based on as issue with flashbacks in Java earlier this year that infected a number of Macs all over the world ?
Flashback is now extinct. It hasn't been seen since late spring/early summer. Since it required active distribution, and could not reproduce and spread itself (no Mac malware is capable of that), and since the security vulnerabilities it used have been closed by updates, you won't be seeing it.
Java is a concern these days, as most of the Mac malware that has appeared in 2012 has relied on Java. If you don't need Java, keep it disabled. Or, better yet, don't install it in the first place.
Apologies for the many questions as I’m new to Mac and am a bit paranoid about protecting my Mac fro threats
Take a look at my Mac Malware Guide, which Clinton referred you to. It will help a lot with understanding what the threats are for Macs and how to protect yourself.