Manual fixes required: Trojan & Downloader virus detected. Manual actions does not work

Dear all I got this very annoying issue, dont know how serious it is, but still very very annoying and a bit scary… My specs: Norton 360 2.5.0.5 IE 7 Vista Home Premium 64 SP1 When there is a quick scan completed there is no problems/virus detected When performing a total scan (all files) 360 finds 4 different Trojan Horses and 1 Downloader virus The system tells me it cannot automatically fix the problem - so manual fixes is required. I am given the options of deleting the virus or to get help…se below Deleting: I then proceed and tells the system to delete and then refresh - but nothing happens. In other words 360 is not deleting the threats. Getting Help: Connectivity is checked. Unable to identify networlk adapter. I manually point it to the right (connected) adapter.Asks me to refresh IP address settings. This briefly turns off my internet connection. And I am back where i started - again tells me it is connecting to support and cant find network adapter…and this loops continue. When i restarts the computer - the alert/at risk (the red cross) is gone. It does not appear until i rescan ALL files. A quick scan does not detect the viruses. Please Hope someone can help and give som guidence. Please ask if further info is required. Thanks a lot in advance