It doesn't say anywhere on the router if it's V1 or V2, however i'm guessing it is.
I'll dig out the manual and see if it says there.
On a side note, I update the firmware to the lastest one on the Linksys website, I was able to go from 500kb/sec to around 700kb/sec, so a slight improvement.
The problem was I was getting loads of problems with that firmware, downloads would just constantly cut out etc. So downgraded again.
Now.... *looks for the manual*