New iMac freezing on startup after NTFS install

I have a new iMac with OS 10.7.4 that freezes for 5 minutes upon startup, then starts working normally. During this time there is no response to the keyboard or the mouse. Force Quit has no effect. I have it set to start without a password so it goes straight to the desktop. This behavior started when I installed a Paragon NTFS interpreter from my Seagate external hard drive. This is done during the setup install from the hard drive to allow both Mac and Windows to use the drive. I have tried this three times, reinstalling the OS each time to get the Mac working again. The drive came with a USB 3 base which is bad news for an iMac. Seagate sent me a firewire base and I hoped that would solve the problem, but no luck. The NTFS interpreter has been uninstalled and the Seagate external drive reformatted as a Mac drive. Everything now works, but the freezing behavior still persists, and I suspect that some startup files for the Mac are corrupted by the NTFS software. I ran the bootlog in the Console for one of the startups with freezing. The following is the only thing I see that seems unusual:

12-08-15 11:34:08.464 AM applepushserviced: Unable to bootstrap_lookup connection port for 'com.apple.iCalPush': unknown error code

12-08-15 11:34:08.464 AM applepushserviced: Unable to bootstrap_lookup connection port for 'com.apple.safaridavclient.push': unknown error code

12-08-15 11:34:08.465 AM applepushserviced: Unable to bootstrap_lookup connection port for 'com.apple.AddressBook.PushNotification': unknown error code

12-08-15 11:34:08.465 AM applepushserviced: Unable to bootstrap_lookup connection port for 'com.apple.syncdefaultsd.push': unknown error code

12-08-15 11:34:08.606 AM com.apple.launchd.peruser.501: (com.apple.ReportCrash) Falling back to default Mach exception handler. Could not find: com.apple.ReportCrash.Self

12-08-15 11:34:08.608 AM com.apple.launchctl.Aqua: load: option requires an argument -- D

12-08-15 11:34:08.608 AM com.apple.launchctl.Aqua: usage: launchctl load [-wF] [-D <user|local|network|system|all>] paths...

12-08-15 11:34:08.817 AM com.apple.launchd.peruser.501: (com.apple.launchctl.Aqua[134]) Exited with code: 1

12-08-15 11:34:08.825 AM UserEventAgent: CaptiveNetworkSupport:CNSServerRegisterUserAgent:187 new user agent port: 17691

12-08-15 11:34:09.685 AM com.apple.dock.extra: Could not connect the action buttonPressed: to target of class NSApplication

12-08-15 11:34:09.686 AM com.apple.dock.extra: 2012-08-15 11:34:09.684 com.apple.dock.extra[155:1707] Could not connect the action buttonPressed: to target of class NSApplication

12-08-15 11:34:09.686 AM com.apple.dock.extra: Could not connect the action buttonPressed: to target of class NSApplication

12-08-15 11:34:09.686 AM com.apple.dock.extra: 2012-08-15 11:34:09.685 com.apple.dock.extra[155:1707] Could not connect the action buttonPressed: to target of class NSApplication

12-08-15 11:34:09.686 AM com.apple.dock.extra: Could not connect the action buttonPressed: to target of class NSApplication

12-08-15 11:34:09.686 AM com.apple.dock.extra: 2012-08-15 11:34:09.685 com.apple.dock.extra[155:1707] Could not connect the action buttonPressed: to target of class NSApplication

12-08-15 11:34:09.687 AM com.apple.dock.extra: Could not connect the action buttonPressed: to target of class NSApplication

12-08-15 11:34:09.687 AM com.apple.dock.extra: 2012-08-15 11:34:09.686 com.apple.dock.extra[155:1707] Could not connect the action buttonPressed: to target of class NSApplication

12-08-15 11:34:10.129 AM com.apple.launchd.peruser.501:SharedServices[168]) Exited with code: 1

12-08-15 11:34:22.000 AM kernel: IOHIDSystem: postEvent LLEventQueue overflow.

12-08-15 11:34:28.550 AM com.apple.launchd: (com.apple.coreservices.appleid.authentication[128]) Exit timeout elapsed (20 seconds). Killing

I can post the entire bootlog if necessary, it isn't all that long. Any experience with this problem? The Seagate people provided good phone support but they haven't heard of this problem before.