Random Short Freezes

[Ptah]

Actually that sounds like there's some problem with your client getting sprites from the Hard drive. Maybe you've been running anything that eats up hard disk response time? Like I sometimes have that when I'm running some torrent download and it gives me a nice speed :D This might include running installers, checking hard drive for something (like viruses via antivir), saving big files to it, saving a big bunch of small files, installations, etc. etc.

P.S. I just can't not say this: stop downloading porn.

P.P.S. If everything else fails try moving the directory in which your client rests, like to root of hard disk or other hard disk :D