internet problem

i have iMac G5 with powerpc g5 and d-link adsl router connected to mac through usb cable
now i can access internet form firefox as well as some other third party software but not from safari and mac it self so can't update my mac with it's inbuilt update feature please help me

i have iMac G5 with powerpc g5 and d-link adsl router connected to mac through usb cable
now i can access internet form firefox as well as some other third party software but not from safari and mac it self so can't update my mac with it's inbuilt update feature please help me

If you take out the router and connect to the internet (is this dial up or cable for example) is everything working now?

Check to see that the Mac is connecting by ethernet (not USB) and is using DHCP(Preferences>Network). Perhaps it is connecting using Bluetooth to someone else's connection and you think it is yours. I have my bluetooth off and connect by ethernet.