Resetting of Internet Connection Every Time I Reconnect. PLEASE HELP !!!

Hi!
I have a MacBook running Mac OS 10.4.11 with the latest updates.
Intel Core2 Duo @ 2.16 Ghz
1 GB RAM
I am connected to the net via a wireless router (thru Airport) and PPPoE.
Recently, I have been having a problem. Each time I try to connect, the first time was OK but when I tried to reconnect a second time, the password authentication failed.
I used to go to Network Preferences and retype the password. This would work but then again now this too doesn't work.
I have to delete my location settings each time and make a fresh new location. I also used to get the message :
'NetCfgTool wants permission to change access permissions of item "PPP Password" in your keychain. Do you want to allow this?',
with the options "deny", "allow once", and "always allow" (last one is greyed out and I cannot click here)
After clicking on "allow once" I get the message 'PPPD wants permission to use the "PPP Password" item from your keychain. Do you want to allow this?'
The 'always allow' option connects it and upon any disconnection, I have to go through the same torture all over again.
This is really a pain in a place like India where net connectivity sometimes is very irregular.
If somebody has a solution, please HELP !
Apollo Rajkumar
[email protected]

Hi apollorajkumar, and a warm welcome to the forums!
I think it was one of the last two Security Updates.
Go to System Preferences: Security. Check the box next to "Require password to unlock each secure system preference." Then lock Security.
Try this cure for Security update...
http://discussions.apple.com/thread.jspa?threadID=1730909&tstart=0
Cure for Security update...
http://discussions.apple.com/thread.jspa?threadID=1730909&tstart=0
http://discussions.apple.com/thread.jspa?messageID=8309498#8309498

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