IE 6 download problems

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Hi all,

I've experienced an odd situation in the fact my computer is unable to open
PDFs, RealMedia content, or even allow Flash updates to occur on such things
as sporting events while surfing the internet with IE6. Concerning the PDFs
and RealMedia content (I need the RealMedia content for school), I am able to
download the necessary files to my hard drive and open them from there, but
when I just try to open from IE, it's telling me the files cannot be found.
This happens across multiple websites as well. I also use Opera as a browser
and that works just fine. This is one of those situations where everything
was fine and then it all of a sudden it wasn't. I wish I could pinpoint
where exactly this happened, but unfortunately I cannot. Has anyone had this
problem or possibly know how to go about fixing it? I appreciate any
feedback you can provide.

Thanks,
Chris
.