Normally I would let this slide, had I not just read the CNET report on Windows latest fix release for 14 security holes in doze, which makes 20 patches this month and also noted with interest that the average response time from MS from reported hole discovery to patch release being just over 200 days. Eye Digital report response time is 216 days for patches. Also note that 6 of the new patches cover holes that allowed the PC to be taken over by another user, and had potential greater than the hole exploited by Mblast worm. Sorry, But I personally cant look away when security is let go so bad. Pick a better mail client if you need security, 6 months is a long time to wait for a hole to be fixed. IMHO, if you really want to be targeted by viruses, and walk around with a target painted on your back, go for it. Otherwise Use a different client. For the record, The mailer of choice here is thunderbird for windows. and I use Syphleed at home and evolution at work.
I have been using it for years and years and years.. As long as you keep it up to date, you have very little problems if you are "Aware" enough.