limitations in ngram-merge

[rix]

Hi

We are currently having a problem with the merging of count files using ngram-merge. 
It seems that there is a limitation in the size of the resulting file of 2GB.
Can you give us some information if this is limitation is due to the program or if it is a limitation due to the configuration of our system. We are running ngram-merge in a PIV 2,66GHz 1GB RAM in Suse 10.0.

Best regards 

Ricardo Nunes
Luis Neves