MS Word 2004 crashed after I had written ONE PARAGRAPH in it, so I feel like I'm back on Windows!
The Mac user interface is surprisingly inconsistent. I was expecting this to be the Apple strength, but it's not.
I am perplexed and baffled by how to select multiple items from a list, because it seems like each application does something different. There seems to be no standard. Delete seems to be the same - some things have a context menu with delete, some things have to be dragged to the trash, etc.
Some dialog boxes have no OK or Cancel buttons - what happens if I close it? Are my settings saved or lost? This was a big problem with OS/2, you never knew what was going to happen. OK and Cancel may be a cliche, but at least you know the outcome of each.
Speaking of OS/2, some Mac dialogs use the OS/2 notebook-style interface with back and forward buttons. Some use no buttons and don't have the OS/2 back and forward nagivation. Some look like Windows dialogs. I might expect this with Windows software ports, but even iTunes doesn't follow the Mac's interface.
Every other GUI in the universe uses Alt-Tab to switch among open windows. With a Mac, Alt-Tab switches among groups of windows, and within every group you have to Alt-Backtick to switch windows. I may be wrong, but some of these user interface decisions seem to be made just to make the Mac completely (and perversely) different from Windows with no usability concerns.
No virtual desktop feature? Is this not available for every other graphical operating system in the universe? I can barely function with eight virtual desktops on my Linux box, and that's with a spare display on an otherwise "headless" server showing me a VNC session.
The function keys are what I would consider backwards - if you press them, they do system-related things. I'm not sure what all these are yet, but one makes all the windows you have open too small to read. If you want to send the function key to the application you're using, you have to press the "fn" key. This seems exactly backwards from what you'd want - the rarely used system functions should require the "fn", and the applications should get the main key. Luckily, if you dig deeply enough, you can change this behavior to what you want.
Except for F9 through F12, which ignore this preference. To be even more perverse, these are some sort of macros. You can't swap them for regular function keys, you have to go in to the key binding and map them to something else. To make it even more perverse, you can't map it to the fn key, you can only map to other keys like Control.
As a new user, I am left thinking that the Mac interface is trying to be different from Windows at every point it can be, even when it clearly isn't a benefit. They move the minimize-maximize-close buttons to the left corner of the window (which requires extensive mouse movements since most mouse action is on the right where the scroll bars are) and to make it more perverse the three are backwards, like a fun-house user interface.
And then there's the key in the upper right corner which apparently doesn't do anything...
In time, I know I would get used to these quirks, but it makes it very hard to switch from GNOME on Linux (which I still use more than the Mac) to the Mac.
An interesting news report came out showing "Apple Mac Sales Grow Faster Than Windows PCs In Consumer Market" which confirms my opinion that the Mac has a tiny sliver of market share only because people don't have a choice. I may have listed some annoyances above, but overall I am thrilled with the Mac.