I just found an easy solution on my vista 32 bits
Add this line at the bottom of the "hosts" file in C:/windows/system32/drivers/etc (Open the file with notepad)
206.127.155.34 aion.patcher.ncsoft.com
(After adding the line just click on File>Save, don't try "Save as..." because it will only let you save as text file )
Tryied downloading the patch 200 times before adding the line with the result of getting Error 36 all the time.
After adding the line the patch downloaded at the first try.
Hope this helps someone
PS. i just copy/past this info so if someone have same problem try it, its worked for me