Hi thanks for your suggestions.
I have checked the settings and compared with my Macbook which tends to have better speeds but is still way off that of a PC in connection speed.
I'm on the latest version of Mac OS, I've checked and no update available (Snow Leopard).
I've replaced the DNS settings on the Mac with Open DNS, but nothing changed.
Currently the option of hard wired isn't available since the router is located in a shared location not in my apartment (it's a
Serviced Apartment). The landlord says Starhub routers are individually programmed so it couldn't be moved to my apartment (I do have cable connection) but I'm dubious about that.
I haven't tried renewing my DHCP - do you mean on the router? I can access the router control panel so I'll do that, I'll also check a similar setting on the Mac.
I've tried running the machines side by side and checking settings, as well as going through all the settings with Apple but nothing has jumped out as different.
I've deleted with Apple lots of settings and started again but haven't removed Airport, I'll try that. Also I did wonder if getting an external wireless card of some kind and plugging that in might help but am loathed to spend the money and then not be able to take it back if it doesn't. Carrefour who are good at returns don't have anything Mac compatible.
I hadn't thought of Malware, I know it's unlikely but worth checking so I will look into it.
I haven't tethered iPhone I'll try that although I've used Skype on the iphone and that also had connection speed issues although the Speedtest Iphone app suggests everything is fine. Skype on the other hand reported it as 'average' or below average speed at times.
It's Starhub I'm afraid.
Does this info inspire any other ideas?