Well, after much investigating and after hours searching the HP webpage I´ve found the solution for my wireless weird problems. It seems that the internet protocol Ipv6 is not very well supported by Microsoft Windows Vista although it comes enabled by default. What a shame!!!. Many people are having weird problems with their wireless and internet connections. The nasty thing is that all seems perfectly ok, and well configured and figuring out that the cause is the Ipv6 protocol is not an easy task. Well, in the following link explains how to disable Ipv6 from your Windows Vista box. http://www.microsoft.com/technet/community/columns/cableguy/cg1005.mspx#ENAAC You can either disable it from your network connections or by editing the registry. I have had just one problem in a whole week by disabling the ipv6 from the network properties, so I decided to disable Ipv6 interely from my box by editing the registry. Hope I am not going to have problems anymore. This is in my opinion something to be taking into account.
I don’t know why Windows ships with Ipv6 enabled by default when this protocol is not yet very well implemented and not all the network devices support this protocol. If a wireless router, switch or whatever does not support this protocol and you have it enabled by default it can cause problems, such as lock ups, and the only solution is rebooting your box.