Hi. I've just switched to a Macbook running on OS X 10.5.4. But I'm having trouble when it comes to running software updates for any of my programs. The most common message is that it is unable to connect to the server, however my wireless internet is connected and working fine (and when I run Network Diagnostics it cannot find anything wrong). The only other problem I am facing is that Safari cannot connect to the internet either (despite Firefox being able to). Any thoughts or help would be much appreciated. Thanks.