So you're saying when you hit Shift-Enter with a region selected, it starts playing at Bar 1 Beat 1? I'm pretty green in Logic too (less than a year) so I feel your pain when stuff like that happens... my first paranoid reaction would be to hit Option-K and track down the keyboard command in the directory to make sure it hasn't gotten altered inadvertently. If it looks kosher there (IOW, says Shift-Enter is Play From Selection), I might try resetting it just for drill. Beyond that, I'm stumped. But there are many more experienced Logical types around, like Scatman, Geoff and Getbent who might can be of more help. Good luck!
[You are hitting the Enter on the numerical keypad and not Return, right? ... Also, the thought just occurred: are you using a standard full-featured keyboard, or one of those new-fangled abridged keyboards?]
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