Is Lion aka 10.7 supported on "iMac 27" 3,06GHz, Intel Core 2 Duo"?

Hi,
Will Apple support 10.7 (Lion) on  late 2009 Core 2 Duo iMac's?

Anyone here who knows can't tell you and the rest of use don't know.
You are going to have just wait until it is released to find out.
Allan

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  • IMac CPU3.06 GHz Intel Core 2 Duo, 8GB, Extremely slow and repeatedly "out of Memory" since migration from Mountain Lion to Mavericks

    Dear Apple Support Community.
    As mentioned by a number of users reporting the same problem, my 2009 iMac CPU3.06 GHz Intel Core 2 Duo, 8GB RAM, has become extremely slow and repeatedly "out of Memory" since it was migrated from Mountain Lion to Mavericks (OS 10.9 then OS 10.9.1).
    I have already run CleanMyMac, deleted 5GB of useless stuffs, which did not translate into any improvement. Following the advices collected in other Apple Support Community threads, I have applied EtreCheck the outcome of which is provided below.
    For information, I have also upgraded my 2011 MacBook CPU2.3 GHz Core i7, 8GB which became only a bit slower than before, sometimes freezing which it almost never did before. However, I am used to the fact that Mac get usually slower and more prompt fo freeze after upgrading to a more recent OS.
    Both my 2009 iMac and my 2011 MacBook have F-Secure installed. So the problem with the 2009 IMac is unlikly to be due to the presence of F-Secure. Interestingly, the few abnormalities found by Etrecheck were exacly identical before I ran CleanMyMac. There are two more findings (mentioned below) since I ran CleanMyMac on the 2009 iMac, which again didn't improve the problem.
    So please find below the details of the EtreCheck experience and some additional measurements made with iStat while running EtreCheck:
    Hardware Information:
    iMac (24-inch, Early 2009)
    iMac - model: iMac9,1
    1 3.06 GHz Intel Core 2 Duo CPU: 2 cores
    8 GB RAM
    Video Information:
    ATI Radeon HD 4850 - VRAM: 512 MB
    Audio Plug-ins:
    BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
    AirPlay: Version: 1.9 - SDK 10.9
    AppleAVBAudio: Version: 2.0.0 - SDK 10.9
    iSightAudio: Version: 7.7.3 - SDK 10.9
    System Software:
    OS X 10.9.1 (13B42) - Uptime: 0 days 2:40:57
    Disk Information:
    WDC WD1001FALS-40K1B0 disk0 : (1 TB)
    EFI (disk0s1) <not mounted>: 209.7 MB
    XooS5 HD (disk0s2) /: 999.35 GB (189.85 GB free)
    Recovery HD (disk0s3) <not mounted>: 650 MB
    OPTIARC DVD RW AD-5670S 
    USB Information:
    Apple Inc. Built-in iSight
    Canon CanoScan
    Apple Computer, Inc. IR Receiver
    Apple Inc. BRCM2046 Hub
    Apple Inc. Bluetooth USB Host Controller
    FireWire Information:
    WD My Passport 071D 800mbit - 800mbit max
    EFI (disk1s1) <not mounted>: 209.7 MB
    disk1s2 (disk1s2) <not mounted>: 2 TB
    Boot OS X (disk1s3) <not mounted>: 134.2 MB
    Thunderbolt Information:
    Kernel Extensions:
    com.f-secure.kext.fsauth          (1.0.0d1)
    Problem System Launch Daemons:
    [failed] com.apple.wdhelper.plist [REMARK: this abnormality appeared only after running CleanMyMac. It does not appear on my 2011 MacBook]
    Problem System Launch Agents:
    Launch Daemons:
    [loaded] com.adobe.fpsaud.plist
    [invalid] com.bjango.istatlocaldaemon.plist [REMARK: this abnormality pre-existed to running CleanMyMac. It appears also on my 2011 MacBook]
    [loaded] com.f-secure.fsavd.dbhelper.plist
    [loaded] com.f-secure.fsavd.plist
    [loaded] com.f-secure.fsmac.firewall.plist
    [loaded] com.f-secure.fsmac.fsupdated_guts2.plist
    [loaded] com.f-secure.fsmac.licensetool.plist
    [loaded] com.macpaw.CleanMyMac2.Agent.plist
    Launch Agents:
    [loaded] com.babylon.activation.plist
    [loaded] com.bjango.istatlocal.plist
    [loaded] com.f-secure.relauncher.plist
    [loaded] com.f-secure.trasher.plist
    User Launch Agents:
    [loaded] com.adobe.ARM.[...].plist
    [loaded] com.google.keystone.agent.plist
    [loaded] com.macpaw.CleanMyMac2Helper.diskSpaceWatcher.plist
    [loaded] com.macpaw.CleanMyMac2Helper.scheduledScan.plist
    [loaded] com.macpaw.CleanMyMac2Helper.trashWatcher.plist
    User Login Items:
    iTunesHelper
    Dropbox
    F-Secure Anti-Virus for MAC
    3rd Party Preference Panes:
    Flash Player
    Internet Plug-ins::
    FlashPlayer-10.6: Version: 11.9.900.170 - SDK 10.6
    Default Browser: Version: 537 - SDK 10.9
    AdobePDFViewerNPAPI: Version: 11.0.04 - SDK 10.6
    AdobePDFViewer: Version: 11.0.04 - SDK 10.6
    DivXBrowserPlugin: Version: 2.1
    Flash Player: Version: 11.9.900.170 - SDK 10.6
    OfficeLiveBrowserPlugin: Version: 12.2.8
    Google Earth Web Plug-in: Version: 6.1
    QuickTime Plugin: Version: 7.7.3
    iPhotoPhotocast: Version: 7.0
    User Internet Plug-ins::
    Picasa: Version: 1.0
    Bad Fonts:
    None
    Old applications:
    None
    Time Machine:
    Skip System Files: NO
    Mobile backups: OFF
    Auto backup: YES
    Volumes being backed up:
    XooS5 HD: Disk size: 930.71 GB Disk used: 753.90 GB
    Destinations:
    XooS5 TM [Local] (Last used)
    Total size: 2 
    Total number of backups: 32
    Oldest backup: 2013-09-15 01:11:39 +0000
    Last backup: 2013-12-07 12:48:45 +0000
    Size of backup disk: Too small. Backup size 2  < (Disk used 753.90 GB X 3)
    Time Machine details may not be accurate. All volumes being backed up may not be listed.
    REMARK: The above finding is unlikely to be accurate. In fact, my Time Machine is supported by a 2TB WD My Passport Studio external HD connected with a Firewire 800. As mentionned, only 754GB of the 2000GB are used.
    Top Processes by CPU:
    5%          backupd
    5%          Mail
    5%          WindowServer
    3%          Finder
    3%          Dropbox
    Top Processes by Memory:
    1.60 GB          mds_stores REMARK: this item was marked in red in the outcome of EtreCheck, so I assume there is something wrong there
    82 MB          Finder
    74 MB          Mail
    49 MB          softwareupdated
    49 MB          Dropbox
    Virtual Memory Statistics:
    97 MB          Free RAM
    1.21 GB          Active RAM
    1.19 GB          Inactive RAM
    1.21 GB          Wired RAM
    1.83 GB          Page-ins
    36 MB          Page-outs
    Please find now some additional measurements collected with iStat while running EtreCheck:
    Practically:
    The iMac can work slowly with only one software e.g. either Mail or Safari or Firefox, but still the below "out of Memory" message occurs about every 3 minutes.
    Aperture has becomre to slow to be useable
    If trying to write a mail (with Mail) while Safari or Firefox is open, then the "out of Memory" message occurs about every 20 seconds so I need to check on "Resume" several times per minute.
    Conclusions
    From the above, unless anyone in the Apple Support Community proves to be able to identify a specific problem leading to a way to find a cure, I tend to conclude that Mavericks is not suitable for computers operating with a Core 2 Duo CPU even with a 8GB of RAM.
    Unless I missed something, I did not see any warning from Apple Computer Inc. informing their customers they should refrain from upgrading Core 2 Duo Computers.
    The only solution I see so far is to downgrade from Mavericks to Mountain Lion. And the Apple Support Community would confirm that it is the only solution, I would appreciate to get your guidance on how to proceed.
    Intended action plan
    Migrate the above 2009 iMac to a 2014 Mac Mini Server operating on Mavericks to ensure that no data may be lost while downgrading to Montain Lion.
    Provided the above downgrading operation is successful, assign this 2009 iMac to partial retirement e.g. Mail, Skype, iTunes  and DVD player.
    In advance, I would like to thank the Apple Community for helping me either i) finding a cure to the problem, ii) or confirming that Mavericks cannot operate properly on Core 2 Duo computers, iii) and in such a case, guiding me on how to downgrade to Mountain Lion.
    Yours sincerely
    Core

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    I took a lot of pictures inside the machine. As soon as I figure out a good place to post them, I'll try to add a link here.
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    Greetings!
    I know this is in response to your post from over 2 years ago, but I was searching on Apple's site for the max RAM I can upgrade our refurbed iMac too and it brought up this post.
    Oddly enough, I've been experiencing the same screen issues and locking up on our iMac as well. I was concerned it was a bad memory module, but now I'm thinking it's the same issue you found.
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    Thanks in advance for any help on the issue it’s much appreciated. At the moment I'm pretty close to ditching the thing and buying an Alienware!

    See:
    Mac Maintenance Quick Assist,
    Mac OS X speed FAQ,
    Speeding up Macs,
    Macintosh OS X Routine Maintenance,
    Essential Mac Maintenance: Get set up,
    Essential Mac Maintenance: Rev up your routines,
    Maintaining OS X, 
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