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10.3: A fix for semi-functional Panther networking Network
If you recently upgraded to Panther and find yourself unable to connect using Ethernet but wireless works, or vice versa, open up Console (in /Applications/Utilities), click the "Logs" icon on the top left, and select system.log. If you see an error about UniNEnet::restartTransmitter - transmitter appeared to be hung, there may be an easy fix.

In my case, I had installed the Netlock VPN Client for Nortel Contivity some time ago, and never uninstalled it. There was a folder called /Library/StartupItems/Nleac that was causing the problem -- after moving it, and restarting the iBook, the problem went away.

Of course, that's a condensed version of many hours worth of work, iteratively moving files into and out of a clean system until networking broke, and finally narrowed it down. You could go the easier route, and as suggested in this hint, just move files out of /Library/StartupItems and /Library/Extensions first...

To see some of the apple forum discussions, go to, put restarttransmitter in the search box, and set category to "search discussions". I'd include links, but the search function doesn't seem to be working right now. Judging by the forums, this is a pretty nebulous problem effecting many users, so there's probably a deeper networking issue that Netlock just happened to be triggering in my case. YMMV! Good luck.

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10.3: A fix for semi-functional Panther networking | 3 comments | Create New Account
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10.3: A fix for semi-functional Panther networking
Authored by: ctbeers on Jan 24, '04 11:29:09PM

You can reliably uninstall Netlock, if that is indead the problem, using the Netlock provided uninstaller at

/Library/Application Support/Netlock/uninstall

This is the netlock recommended uninstall procedure.

Christopher T. Beers
UNIX System Engineer - Syracuse Univeristy

[ Reply to This | # ]
10.3: A fix for semi-functional Panther networking
Authored by: notaclone on Jun 23, '04 01:08:27PM

Anyone know if version 2.1.7 of Netlock cures this problem?
Have to slog thru corporate red tape before I can have the privilege of downloading the update.
Wish I had noticed the restartTransmitter log entry sooner - a search on that popped right to your post! - AFTER I spent hours playing detective to figure out what had changed to cause the funky networking (apparently only happens with OSX3.4 over DHCP, Netlock 2.1 VPN was very happy on OSX3.3 over PPoE)
Uninstalled and seems fine now. Thanks to all.

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10.3: A fix for semi-functional Panther networking
Authored by: Anonymous on Feb 18, '05 01:04:54PM

Version 3.1.1 cures the problem on my Mini.

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