cvs [server aborted]: out of memory; cannot allocate 5242880 bytes

[Aioanei Rares]

I get this message while trying to checkout the xenocara tree; the othe
r trees work as a charm. It's always the same number of bytes and my machine 
has enough RAM and disk to perform this operation. Anyone have any ideas? I'm 
running 4.6-current with 2 GB of RAM in the machine and enough disk space.