Problems with FileVault 2 on my iMac mid 2007 with Mac OS LION on it

Hi guys !
Get a problem with FileVault 2 on my iMac mid 2007 with MAC OS LION on it. FileVault 2 works, but after rebooting my system, it was unpossible to select an account with the cursor of my trackpad. No chance.
Before activate Filevault 2 the trackpad works fine. No problems to select an account. Anybody else with the same problem ?
Regards
Volker

Hi EVO67 !
I checked out your solution, but.... sorry it doesn't works.
So I cut off the bluetooth connection of the magic trackpad from my iMac and pair it again, but the problem is the same.
May be it's bigger bug with LION, so I need an update for this function.
But thank you very much for your help.
Regards
Volker

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    3) In the Finder, the spinning beachball appeared once with an error message: "The drive has not been ejected properly". Of course I didn't eject or disconnect any drive... There was also an icon "SystemUI Server" appearing in the Dock! I was forced to hard reboot.
    4) Made all the usual stuff: all Onyx tests and repairs + Apple Hardware Test full tests + permission and disk repairs + PRAM/SMC reset... No problems detected, but nothing resolved in the end. (The only thing I haven't tested yet is Techtool Pro or DiskWarrior.)
    I think this is an internal hard drive problem, but I'd like to have a confirmation from you, forum pros. Would a hard drive replacement fix the problem? Or is the internal drive OK but some connection to the drive not working anymore, making a HD replacement useless? (Sorry if this is nonsense, but I'm not very skilled in hardware stuff.)
    In other words, any help would be appreciated. (And my AppleCare expired some weeks ago! Talk about bad luck...)
    Thanks in advance for any help!

    D.F. wrote:
    Done! Installed a new HD following the instructions of this site. Everything works perfectly again.
    Yay!
    But I'm still disappointed that my original internal hard drive chose to die two weeks after my AppleCare three-year warranty expired!
    The original HD was a Western Digital. Is WD a crappy brand?
    You'll get widely different opinions on that. Many folks say their --cheap-- inexpensive ones are "junk;" others say they've had several that ran for years.
    Some say the ones Apple uses are better quality -- not quite server grade, but better than the run-of-the mill consumer products.
    As with any manufactured product, disk drives may have a few early failures (even in the first days or weeks); a few will last for many years, most will last for 2-4 years or so. Even under identical circumstances, there's no predicting the life span of any one drive.

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