I have a Toshiba L505 laptop that came with Windows 7 Home Premium. I have a home network setup through a DLink DI-524 router. With Windows 7 Home Premium - I had no issues connecting wirelessly to this router. However, after several security upgrades and also upgrading to Windows 7 Professional - I can no longer connect. It does detect the home network but will not allow me to connect. I even tried disabling the Windows 7 Prof. Firewall - but not luck. Any suggestions ?