For Comodo users who are using a Vista machine, and thinking (all) thier Browsers hanging up/partial loading might be due to Comodo, the following site has some useful information regarding this problem.
http://www.mydigitallife.info/2007/03/22/disable-tcp-auto-tuning-to-solve-slow-network-cannot-load-web-page-or-download-email-problems-in-vista/. Or simplying googleing "Vista Tcp Auto Tuning" . I disabled this and everything works fine.
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