downloading really slow

why is my downloading speed on garrysmod.org 10kb/s its not my internet connection because i was doo over 600kb/s yesterday

[editline]04:38PM[/editline]

doing*

[editline]04:47PM[/editline]

is this because too many ppl downloading at once ?

http://www.facepunch.com/showthread.php?t=629450