so, i've gotten my logic board replaced twice now. and they replaced it for the 2nd time about a month or so ago because my uMBP early 2009 17" kept freezing. the first time, it was because the speakers kept going out and the USB ports wouldn't keep a steady connection. ever since the last time they replaced the logic board, my computers has been going slow. or at least slowER. i get the pinwheel more often now, and firefox used to take only .5 seconds to open into google, now it takes about 6 seconds to fully come up. anyway, i didn't think that was a big enough deal to make a complaint about, but the pinwheel sometimes comes up and stays there for a very long time. but anyway, now i'm trying to view images and everything keeps disappearing, including my desktop. and it says i have a "preview" open on the top bar, but nothing is open aside firefox when i four finger swipe downward. so i quit the preview i apparently have open, and it says i have a text/edit open, which i never even went to text/edit. i can't see anything, aside my wallpaper. even the image folder that i was in is gone. and then it all comes rushing back open, as if i just opened it all again. and sometimes it opens folders that i never even tried to open. and then i'm going through it again, bam, everything disappears again. it stuck last time, showing only my wallpaper, so i closed my macbook into sleepmode and opened it back up hoping that would help, but when i opened it back up the laptop never turned back on. it froze in sleep mode, the little flashing indicator light was stuck on and i had to force shut down and restart. what is going on? this is a reasonable complaint, right? i took a video of this all happening so i can prove it to apple if needed. last time they couldn't find any defects in the code or whatever, but since i had a video they went ahead and replaced the logic board. would i need ANOTHER logic board replaced? i mean, i was already disappointed about getting the pinwheel a lot and the speed decrease. which definitely didn't happen until they gave me this 3rd logic board, but this just pushes it over the line. i already got it replaced twice, is this normal? it's getting pretty frustrating.