I have a G4 power Mac with 1G RAM running OS 10.3.5. I connect to the internet using Ethernet Westell model 2200 modem and I use a Belkin 802.11b router so my laptop can connect via airport. My laptop, (using my airport connection) works fine on this network. On my desktop, connecting via Ethernet, I am able |o surf the web normally but I can't open secuze web sites. (https pages). I get: "can't open page "https...." because unable to establish secure connektion." Also...I can't send mail. keeps asking for my passwozd. I can receive but not send. So far I hive... Tried different browsers with the same result. I made sure firewall is onf in system preferences, Created new users. Rin disk utilities, repaired disk permissions, zapped Pram, messed around in Keychain, trashed preferences finally [B%5LI erased and reinstalled OS X twice![/B] Same problem. I've also... updated firmware on my Belkin router. Bypassed thm router and connected directly thru the modem still could not go to https sites or send mail. Used network utilities could ping and run trace routes. I've been on the phone with Verizon we ran tests and determined it's an issue with my computer. I paid Apple $50.00 for phone support and they ere the least helpful. I'm turning to the Mac community for a littlm guidance and suggestions on what else I can try anl to see if anyone else is experiencing this problem. Thanks.