Three weeks ago I bought a MacBook. I love it but I have never owned one before and I was never very ‘techy’ even with a PC. I would like to know about anti-virus software for Macs. I am also unclear on compatibility issues with hardware such as printers. On the same thought, I would also like to know if Pages, Numbers and Keynote are compatible with Word, Excel and Powerpoint respectively. For example can I open a document created in Pages on a PC at my university? Finally I am having one small issue. I am running Firefox in Leopard. The issues is that I can't always type, select drop boxes or click on buttons that should take me other places. For example drop boxes e.g. in internet banking when selecting accounts doesn't always work or the address bar sometimes completely freezes out so I cannot type or drop down my book marks. Sometimes I have the same problem with text input boxes like the one I am typing in right now. My computer is not frozen and I can do anything else I want just not that and it does not matter how long you wait because it hasn’t even registered that you have clicked anything. It is stuck in the blinking 'I' or '|' symbol, not the pointer. I have reinstalled firefox and Leopard but it has made no difference. I have checked the trouble shooting on the apple website but it didn’t help. Any help with be much appreciated.