I wonder why people come to conclusion like that to that specific problem.
surely the user may knows that there is probably zillions (by that i mean a lot) of users using gmail via IMAP (at least the enterprise accounts) don't you think it's maybe something else you are doing that flags your account
I use a osx keyboard on my linux laptop that act as desktop, the only thing annoying is the switch between tabs (Super key on OSX, alt key on Linux)
The copy and paste in terminal was annoying at first, and used to remap it to super-c super-v but then I embraced it and doesn't seem to bother the context switch when I am back on OSX.
The only difference for me between linux and osx is the fonts.. not sure why but alas i start to get use to to the linux fonts, i used to really be bugged about it before.