I'm not sure if it's the same model or not but I do know one of the imac models had a problem with over-heating.

Try these things:

1. SAFE Boot & Repair Permissions. After repairing permissions then reboot normally.

2. Delete your LW prefs folder whilst it is CLOSED; it is found here /Users/your_username/Library/Preferences/LimeWire

3. Consider doing this Tip: Purge the Downloads Queue!

4. Don't share over 1,500 files as mac osx's java doesn't handle it very well.

5. Make sure your system is using Java 1.5 by going to Utilities folder, finding Java folder, preferences, ... explained here Setting up Java 1.5 But do this whilst LW is closed.

By "put 1.5 at the top" do you mean to say "put 1.4.2 at the top"? This is what my preferences for Java look like, and there aren't any 1.5's on there anywhere...

I have already done the cleanup things you suggested multiple times (I do them on a regular basis in order to keep Limewire running at optimum speed), so the next thing left to try is rebooting in Safe mode and Repair Permissions. To get into Safe mode I hold "Shift" until the spinning gear appears at startup, right?

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