Can't shut down after going on line

After going on line I am unable to shut down the computer without using the power button. If I start up and don't go on line I am able to shut down with no problem. I have even redone my internet connection. Have a dial up connection. I have done a clean install and after still having the problem I did another install. I have used Preferential Treatment and DiskWarrior but am still having the same problem. Have checked the permissions and trashed some preference files without any luck. When the computer is running I am not having any other problems, just can't shut down.
PowerPC G4   Mac OS X (10.4.3)   1.75 GB DDR SDRAM

You might try launching Activity Monitor from your Utilities folder, click on the Process ID to arrange things in the order in which they were launched. Take a look and see what has started running after Finder was launched. Activity monitor and pmTool will both be running, so too will Spotlight related processes mdimport and mds. Anything else, if you have quit all the programs you launched, is a potential candidate for interfering with shutdown, if it is refusing to let go. Those items with an icon are "regular" programs running, those without an icon are UNIX programs that are running. See if you have anything that might be related to Internet usuage that will not quit. You can force quit from the Activity Monitor.
Francine
Schwieder

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