i'm a long term user of windows, and i just bought my first mac ever earlier this month. first of all, let me just say, i am not here to rant about Mac OS X. infact, i'm looking for some answers by mac users, so please bare patience with me. i'v really gotten used to os x, pretty quickly, and i have loved most things about it the way i hoped to. i am dealing with some things that leave me feeling disappointed lately, and i need advice on what the problem really is? i have noticed some lag and beach balling on the machine. its not substantial, so i cannot be sure if i am being too fussy or if the machine has a problem. i bought the late 2011 15inch base model MacBook Pro. so it has a quad core i7/4gb Ram, and the standard 5400rpm HDD. is it normal to experience some beach balling at ANY time on macs? because my impression by other users on here and other places (i'v been a lurker) is that it rarely, if ever happens. i just reinstalled Lion yesterday clean. and the beach balling actually happened a little more frequently at first. i was adjusting the preferences the way i had it before the clean install and at various times when i'd go to different option it would beach-ball. i do not mean that the machine froze - i could still move the cursor. but my question is - is this normal? how often do you experience this? should beach ball happen rarely? how rarely? twice a month? i am really unsure. i originally came from a cheap windows acer machine which had a mediocre processor and 4gb ram but with a moments xt hdd. i feel the improvement and ability in this MBP with opening and running various power hungry apps. but i felt like i was supposed to expect no lag between switching apps, etc.