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<blockquote data-quote="Nethfel" data-source="post: 1034911" data-attributes="member: 89124">Also another thing to consider - assuming when you refer to &quot;Virtual PC&quot; you're actually referring to VMWare because as Harryb2448 noted, &quot;Virtual PC&quot; is a very old PPC based product - vmware is nice BUT it does feel to be a bit of a resource hog.&nbsp; I honestly only use it (Fusion 3.0.x) on my Mac Pro as I found it extremely sluggish on any of my dual core Macs - plus, I don't know how you setup your VM to run, but if you told it to use 2 cores, you need to change that to 1.You only have a dual core CPU in your Mac and if you read the Fusion docs, it talks about not setting the virtual machine to use the same quantity of &quot;cpus&quot; as you have cores in the system as it can kill performance of both OS (host and guest) when the VM is running (has to do with core synchronizations, I don't remember the details, but it is in the docs - but here is a quote from the FAQ on Fusion: &quot;Multiple Virtual CPUs are recommended when you have applications that can take advantage of multiple processor cores and you have a quad-core or octo-core Mac Pro.&quot; )&nbsp; Another issue with a VM is how much RAM did you assign to it?&nbsp; If you have 2 gigs of ram, you need to make sure that the virtual machine isn't set to use 2 gigs of ram as it will also kill performance while running (but should not affect the computer if the VM is not running)I'd agree tho to remove Kaspersky at least from the Mac side and see what happens.&nbsp; You may also want to do some basic troubleshooting (see the sticky in Software section for OSX - Operating Systems) - you can also try using Onyx to help keep your machine running in top form.</blockquote>

[QUOTE="Nethfel, post: 1034911, member: 89124"] Also another thing to consider - assuming when you refer to "Virtual PC" you're actually referring to VMWare because as Harryb2448 noted, "Virtual PC" is a very old PPC based product - vmware is nice BUT it does feel to be a bit of a resource hog. I honestly only use it (Fusion 3.0.x) on my Mac Pro as I found it extremely sluggish on any of my dual core Macs - plus, I don't know how you setup your VM to run, but if you told it to use 2 cores, you need to change that to 1. You only have a dual core CPU in your Mac and if you read the Fusion docs, it talks about not setting the virtual machine to use the same quantity of "cpus" as you have cores in the system as it can kill performance of both OS (host and guest) when the VM is running (has to do with core synchronizations, I don't remember the details, but it is in the docs - but here is a quote from the FAQ on Fusion: "Multiple Virtual CPUs are recommended when you have applications that can take advantage of multiple processor cores and you have a quad-core or octo-core Mac Pro." ) Another issue with a VM is how much RAM did you assign to it? If you have 2 gigs of ram, you need to make sure that the virtual machine isn't set to use 2 gigs of ram as it will also kill performance while running (but should not affect the computer if the VM is not running) I'd agree tho to remove Kaspersky at least from the Mac side and see what happens. You may also want to do some basic troubleshooting (see the sticky in Software section for OSX - Operating Systems) - you can also try using Onyx to help keep your machine running in top form. [/QUOTE]

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