My Download Stop???

Ok, Marsimar is right. This looks like your AV or malware blocker is stopping the final saving of the temporary file to disk. If it does work when using a wireless connection...then there must be a difference in settings.
Even though I normally advise against this... but if, as a test, you reload something proven to be safe (for example some file you already downloaded through wireless before...) but this time download it wired + with your security off. Again, be careful and only as one test.

What is the maximum size that DOES work when you download wired?

Can you post the settings of the adsl router?
And just to be sure... Am I correct that the problem is that >1Gb files DO download wirelessly but DO NOT download wired, through the same modem/router?

what is this wireless connection?

And I think that this problem can give me my modem,i use TP-Link ADSL2+Router,because when I log on to the next line of wireless Internet,This problem does not occur.

Kliton x64 said:

Ok,I have 2 Modem 1 Thomson with wireless, and 1 TP-link ,when I log on to the next line of wireless Internet,This problem does not occur,the next line is with wireless ,was picked up by others,from neighbor.

I'm sorry for poor english!

So YOUR wireless has the same problem but the neighbor does not?