Serato Scratch Live & Unibody MBP do not work with 4GB ram

same here, I originally purchased the MB unibody with 4gb installed to use with Serato, i had to pull the 2gb stick out in order to properly run it. This is ridiculous being that I paid extra for 4gb and I can't even use it, I never had this problem with my previous Macbooks running 4gb

Please assist on this problem. The same problem occurs for me when the last stick of 4GB is tapped into. I haven't had this issue with either my desktop or secondary PC laptop.

Are you sure the RAM is to spec*?

http://www.macmaps.com/badram.html

If it is not quoted for your mac model version, and not from one of the vendors in the link mentioned, it is possible the RAM is not to spec.

- * Links to my pages may give me compensation.

Since the RAM is factory installed, this may be a warranty issue with the installed RAM. Contact AppleCare.

Yes, same problem here. Unibody MPB with 4gigs of ram and 10.5.6

Looks like if start SL after your computer been running for a while and has first 2 gigs of ram filled up with running apps, you will get crazy distorted sound.

So far the only workaround to this that i found is a good-ol' windows reboot.
If you start SL right after the reboot, it works fine. But if you use SL more than once a day, like i do, it gets VERY annoying. Sometimes i end up rebooting my laptop 3-4-5 times a day!!!

Please, Apple, fix this issue.

The interesting thing is that if you boot the affected machine into Windows with Bootcamp and then use SSL, the same problem doesn't occur...

Message was edited by: Ancipital

Has there been any news on fixing this issue. This is a serious problem for those of us who use serato and have 4 gig RAM. According to reports, those macbook/macbook pro's that have 2 gig RAM have no issues of sound distortion indicating that the issue is specific to machines that have 4 gig RAM. Having to take out 2 gig everytime you dj is not acceptable for a computer of this price/specs. Please if you are in the same position post your concern so that Apple get a move on and fix this issue wih the 4 gig RAM.

Just confirming that this bug does affect the 17-inch unibody model. Haven't had the time/motivation to see if removing one of the factory-installed RAM sticks makes any difference (and my intuition tells me that the less cycling of those 10 little screws on the bottom of the 17-inch unibody, the better). In any case, I travel with the computer off and have fortunately not had the issue crop up at any DJ gigs.

At least on my computer, RAM usage alone doesn't seem to be the issue. I tested Scratch Live and its Video-SL option, running along with two browsers both playing videos and a bunch of other apps running (filling up all available RAM). No distortion in that case.

But after leaving the computer on for a couple days, and through five or six sleep/wake cycles, launching and playing audio in Serato Scratch Live resulted in the immediate manifestation of the distortion problem. Problem gone again after a reboot.

I'm sure anyone using Serato SL with macbook/macbbok pro with 4 gigs of RAM does not want the uncertainty of having a computer which may cause sound distortion. Even if it goes way after rebooting there is still the likelihood that the distortion may become apparent.

I just got my macbook this week and tried to use serato... same problem I have the macbook pro with 4gb of ram... I get a lot of distortion checked the wires and everything... Searching google got me to all sorts of forums talking about this problem. I hope apple realizes this is a serious issue and acts quickly... this is my third macbook pro. The first one I bought had a really loose hinge for the lcd and the second one crashed on me after two weeks. This is my third macbook now that I finally got fed up of buying from the store and bought online with added upgrades... 7200 rpm drive and 4 gb of ram and now it wont even run serato... this is sweet considering i bought the **** thing for this purpose alone... FML... or should i say F OUR LIVES apple probably wont come out with anything anytime soon.

I tried with 2GB of RAM and 4GB.. I get clicks, pop's and audio dropouts either way. Mac and PC. I have also a Audio8 Dj Traktor Box, and get the same results. I tried also the reboot with the device plugged in, on the windows side, i need to put the Latency to MAX Settings and that only makes half the drop out disapears.

I really hope Apple figures out the issue, paying 2 gran for a laptop that barely works and not stable isnt a very good deal.

Does anyone know if they've fixed this yet???

I'm looking to by a new MBP only 2.4ghz 2GBRam. Did 10.5.7 fix the problem at all?

This doesn't sound good.

yeah.....any word on this!?... I just got a 13"MBP 2.26ghz/2gb RAM...and I noticed some audio dropouts as well as GUI freezes especially when viewing "ALL" music..or "ALL" video files...

I was hoping that by upgrading to 4GB it would help reduce at least the lag and freezes....

Any Mac guys who dj out there?? on the the new MBP with the 7 hour battery...did they fix any of these problems?? Does it work with video output so we can play videos or VJ with no problems.

You still need the adapter to play composite video right?