unity3d editor crashes a lot. Is there a preferences reset

Oh yes.. glad to see I'm not alone. it started somewhere around 4.2 version. since then each release I was hoping it will get better but it's been worse and worse. Have submitted many crash reports to unity, It is always crashing on bad_access. I just got one answer from unity bug support saying to check if I have enough memory. I have got 6GB memory and SSD disk on my $$anonymous$$ackbook pro. Its happening constantly on operations like when you export or import packages, create scene, or switch scene, build to android device, etc.After restarting unity and repeat action it does it. There are 2 operations that crash always like at current latest 4.6 version (4.6.3f) I cannot export assets. It consistently crash. I cannot copy objects form scene to other scene neither. Opening texture for preview by double click in assets hierarchy crashes unity with 50% probability... Done all $$anonymous$$ac system upgrades, running on latest Yosemit Os, got plenty of disk space on SSD. Reinstalled unity with clean installation also.. Nothing helps. very frustrating to work. Really hesitating to upgrade my pro licence to Unity5 as I do not believe it will get better anyway.

I've got a computer with crappy memory, trash video card, garbage RA$$anonymous$$ and only cost me 25 bucks from a pawn shop. Unity runs flawlessly, never crashed in over a year and a half, never lag, never have errors. I think the problem here is the $$anonymous$$acbook. $$anonymous$$acbook Pro. $$anonymous$$ac. iPhone. iPad. iPod. iTrash. Get a computer not a glorified Blackberry.