Apple iMac 15 in. (M9105LL/A) Mac Desktop

One of Mac's big claim to fame is no freezing,no crashing--my iMac does both all the time. When my iMac freezes there is a little colored spinning ball, I have spent more time looking at this spinning ball than I care to recount. As far as crashing goes, within days of the time it came out of the box I experienced my first "this program has unexpectedly quit," which is a complete crash of the program, causing a loss of all unsaved data. Also, the so-called seamless integration between Mac and Windows does not exist. Documents produced in one do not carry over all of the characteristics (I'm sure this is not the technical term but I don't know how else to describe it). Finally, the monitor on this 15" model is horrible, very fuzzy. Viewing photos is a nightmare, they look terrible and it's hard to see everything.