thanks. looks similar to mine except for the tx burst thing, wasn't sure what that was.

why only 144k ? I thought it was supposed to do 300?

I don't think 'n' can get that high. Have a read of this...

http://en.wikipedia.org/wiki/IEEE_802.11

GingerPrince wrote: Yes, I gathered that.

spoke to apple care and I've gone through their reset procedure. will try it when I get home tonight.

Thrain - do you have any special settings on the wireless lan section to make it work with your MBP?

I'll do a screenshot of my wireless settings on the 2820 and if there's anything on the mbp

I did nothing special to get the wireless to work on the mbp

General Setup

Mixed mode (11b + 11g +11n)

Tx Burst not ticked

Security Settings

TKIP for WPA/AES for WPA2

Access Control

no mac based access control

Advanced Setting

Operation Mode Mixed Mode
Channel Bandwidth 20/40
Guard Interval auto
Aggregation MSDU(A-MSDU) Enable

thanks guys, I think I've worked out what the problem is.

When I got the draytek, I created the wireless lan with the same password. Whichever network mac os x connects to 1st works ok. so in the 1st instance, my old network was fine but the draytek network didn't work. I removed all my plist settings (the whole folder - /Library/Preferences/System Settings) and rebooted. This time, I connected to the draytek without any problems. however, as soon as I tried to connect to my old network, I had the same problems as I had when trying to connect to the draytek. I removed that folder again and rebooted. hey presto, straight into my old network.

It seems that mac os x can't cope with 2 different networks with the same network key. I presume they use it as a uniqueness key in some way.