On Wed, 31 May 2006 09:23:08 BST, Edward Pearson said: > This isn't abnormal or weird, It happens when your internet connection > is fairly slow and its because you sometimes receive incomplete headers > for the page (broken or garbled) If you have noisy hardware that's mangling data in transit, the mangling will *usually* be detected by the checksums on each IP packet. The reason your connection gets slow is because if a corruption is detected, the packet gets thrown out, and needs to be retransmitted by the sending system. If you're still on dialup, a noisy phone line will also make things go slower, as the modem will probably drop back to slower and slower speeds (which are more noise resistant. Getting 56K through a 56K modem requires near-perfect copper - but it will drop back to 44K, 33K, 19.2K. By the time you get down to 9600/4800/1200/300 baud, it can survive incredible amounts of clicks, hums, and other noises. Incidentally, the TCP checksums are *not* perfect. Usually, it doesn't matter, but you *should* verify the MD5 hash on a large file you've downloaded (like a .ISO image, etc). The average .iso is big enough that you have a fairly good chance of getting an undetected bad packet. So always check those md5sums.. :)
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