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yep

Yes, MPM-Worker in apache2 handles peak traffic a lot more efficiently. However, you will need to run php through mod_fcgid to reak the benefits of MPM-Worker. Trust me it is worth it for the performance boost.

mod_deflate is 62% or so faster than apache 1.3's Last I read. You have access to mod_security that prevents comment spam and other cross site scripting attacks in apache2.

All in all it is worth it.
 
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