Suddenly i tunes makes trouble on my iMac OS X

what is wrong with itunes, freezing always my iMac lately.

Hey Ybocajul,
Thanks for the question. When troubleshooting iTunes on OS X, the following articles provide some of the best information:
iTunes: Troubleshooting issues with third-party iTunes plug-ins
http://support.apple.com/kb/TS3430
There are several ways in which an add-on can cause iTunes to act erratically, such as those listed below:
- Loss of iTunes functionality, such as the Visualizer.
- Distortion or irregularity in the iTunes interface.
- Slow performance.
- iTunes won't open or quits unexpectedly.
- You see an alert while syncing stating "... cannot be synced. A duplicate file name was specified."
If you notice any of the above symptoms or other unusual behavior, you can disable any plug-ins not manufactured by Apple by opening iTunes in Safe Mode. This is done by holding down the Option and Command keys (on Mac OS X) or holding down the Shift and Control keys (on Windows) while opening iTunes. If performed correctly, you should see the following dialog before iTunes finishes starting up:
"iTunes is running in Safe Mode. Visual plug-ins you have installed have been temporarily disabled."
Isolating an issue by using another user account
http://support.apple.com/kb/TS4053
Symptoms
When isolating issues and/or troubleshooting software issues in OS X, you might want to use a different user account. Learn how to use this technique to narrow down the cause of an issue.
Resolution
The issue at hand may simply be caused by a bad preference setting or user-specific data file. With proper isolation, you can avoid time-consuming and inappropriate troubleshooting methods.
Thanks,
Matt M.

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    Location: /Library/Logs/panic.log
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    0x25853be8 : 0x7f1c07 (0x456f004 0x45a0e04 0x25853cd0 0x25853cd0)
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    EAX: 0x00000000, EBX: 0x0383e230, ECX: 0x00000000, EDX: 0x0b485000
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    Darwin Kernel Version 8.8.1: Mon Sep 25 19:42:00 PDT 2006; root:xnu-792.13.8.obj~1/RELEASE_I386
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    0x25773ed8 : 0x19a096 (0x3ce3d4 0x3f255e0 0x0 0x48ffe28)
    0x25773f08 : 0x1979c7 (0x3f255e0 0x216 0x25773f38 0x37ec39)
    0x25773f18 : 0x37ec39 (0x3f255e0 0x3ed0f5c 0x25773f58 0x135688)
    0x25773f38 : 0x525059 (0x3f2a510 0x4ae820 0x25773fc8 0x4ae820)
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    0x25773f88 : 0x397927 (0x3fe1a00 0x0 0x450 0x1203)
    0x25773fc8 : 0x19a74c (0x3fe1a00 0x0 0x19d0b5 0x4471fc0) Backtrace terminated-invalid frame pointer 0x0
    Kernel loadable modules in backtrace (with dependencies):
    com.apple.iokit.IOUSBFamily(2.6.1)@0x515000
    Kernel version:
    Darwin Kernel Version 8.8.1: Mon Sep 25 19:42:00 PDT 2006; root:xnu-792.13.8.obj~
    Wed Nov 15 02:19:51 2006
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    0x257bb568 : 0x1c2237 (0x2000 0x0 0x0 0x10)
    0x257bb588 : 0x2eb0ba (0x40c3e70 0x732 0x0 0x2000)
    0x257bb5f8 : 0x3148b7 (0x40c3e70 0x732 0x0 0x257bb65c)
    0x257bb618 : 0x315642 (0x4102b84 0x732 0x257bb65c 0x257bb678)
    0x257bb698 : 0x313158 (0x4102b84 0x4133020 0x257bb6c4 0x257bb760)
    0x257bb788 : 0x2ef22b (0x410fee0 0x4133004 0x257bb8dc 0x257bb8ee)
    0x257bb908 : 0x2f086a (0x0 0x257bbaa4 0x257bb9dc 0x257bba38)
    0x257bb978 : 0x2f808c (0x4050804 0x257bba90 0x0 0x257bbaa4)
    0x257bbad8 : 0x1e2df1 (0x257bbaf8 0x257bbf18 0x1 0x0)
    0x257bbb28 : 0x1cab0b (0x4175ef4 0x257bbddc 0x257bbef0 0x257bbf18)
    0x257bbb98 : 0x1cb331 (0x257bbdc4 0x100 0x257bbde4 0x0)
    0x257bbc48 : 0x1d7040 (0x257bbdc4 0x41ace00 0x1d000 0x3d000)
    0x257bbd78 : 0x1d732c (0xbffff7bc 0x0 0x0 0x0) Backtrace continues...
    Kernel version:
    Darwin Kernel Version 8.8.1: Mon Sep 25 19:42:00 PDT 2006; root:xnu-792.13.8.obj~1/RELEASE_I386

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