As you may have already read somewhere else here within the forums, you must be very cautious with D/Ling files... There are many quite bad scams and cons and nasties out there...
Movies - .avi files and such - are usually very close to 700MB.
There are some complete full-length movies out there that are just a bit larger than 500MB, but they are fairly rare.

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Fusion for REAL!--CDex 1.51--Wackyuses--Bitzi - Check Files Before Download !--.mp3 File Name Change Problems? Try Rename-It!--Alternate PORTS--Avast- Anti-Virus--WindowWasher--IrfanView--PC Pitstop - Test your PC !--Mac OSX Troubleshooting--GO .ape ! - For 'Lossless' Audio Compression--Port :6346 - Test If It Is 'Blocked'--Cole2k Codecs--OldVersion - Newer isn't always better !
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Tomorrow's forecast:
Sunni in places, Shi'ite in others...