For my XP VM itself, I notice 0 issues with speed (MB supports Virtualization acceleration) dd. I do notice a little delay when I launch IE via Sandboxie itself though, but that afterward, no issue either (note if I just launch IE without SBIE, it launches near instantaneously as would be expected). Trust me when I tell you my setup is more secure then Linux and of course Vista/Win7 too; just is. If you double-sandbox then you would be as secure as me. lol
I know modern browsers support sandbox like ability but it's not the same as Sandboxie. Since I also run Sandboxie in a VM, it's like near fire proof. Every so often I hose the whole VM to a rock solid set point and continue from there so no mal-ware, even if Sandboxed, will last long. I do also use Open DNS and do run a rudimentary anti-trojan (because I am on the paranoid side) so I'm not cavelier enough to say my setup is perfect, but again, I am cavelier enough to say it's superior to any other security means, but I've been accused of being overly protective (other forum then here) but I retort that at least I'm 100% immune to drivebys and there is no other way to be so then virtualization. Proselytize I do, but trust me when I tell you that you are not protected (even with Linux) to all driveby situations and that's the reason why you have a false sense of security if you don't Virtualize. There's some programs that literal virtualize the whole OS in real mode (
Deep Freeze for instance; when I was working for my last job, I had to service PCs that we built for the local schools and they used this cool software; a lot of libraries do too and this program is very effective and the inspiration which led to my VM crusade.).
