vserver with different Architecture

My system is a little weird since i did a poor job installing linux: i installed a 32 bit system on a 64bit architecture and then just changed the kernel.

Now installing a new vserver with debootstrap it automatically uses the source system which in my case is 32bit and therefore i got the errors:

kernel: IA32 syscall 311 from ...

It finally annoyed me enough, so i asked a friend and with his help i finally managed to change the architecture when installing a new vserver:

newvserver --hostname name --domain domain --ip ip --dist testing --interface eth0 --arch amd64 --context context

Not only i got rid of the warnings, i experienced a slight boost in performance. But maybe this is because of the source of the error. Now i am installing all vservers again in 64bit and move forward.