Trust me on the following: It's definitely not a RAM issue. Tested. Some websites' downloads work fine, but I sometimes(quite rarely) disconnects from those websites' download servers. Those websites with CRC errors(almost on every >50Mb RAR files, 90% occurrence rate) are the major file-sharing sites like Megaupload, Rapidshare, Hotfile etc. The cables are connected perfectly. Double-checked. The funny part is that I didn't have this issue previously with same computer and the same connection, same modem and router, exact same condition. Please help, thank you very much in advance!