No point in blocking the ports as limewire is able to dynamically select ports.
Unless you block the entire range which may interfere with some other apps.
If your router supports 3rd party firmware try something like DD-WRT this will give you complete bandwidth control.
Or if you want to...
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Have you tried a different browser?
Reinstalled IE?
Scanned for Malware?
Cleared Cache?
Changed Http Version?
Time/Date accurate?
First of all you should ditch the 'smart power', and buy a dfifferent PSU. Even generics would do a better job then those shitboxes.
Antec seems to be degrading in quality day by day.
Regards to your problem, its likely it could be the Antec.
Check to see what the +5Voltage is in bios; it...
Sounds Interesting
Could you provide some further info
Single/double Ram
Motherboard
Ram brand
And is it possible for you to test either components on another machine?