Large archive problem

Hi, I am working with large matrices (~100x100) and had trouble with restoring archives of them. I wrote the attached test program which just adds the same expression to an archive n times (with a unique name each time). For any n, the expression can always be retrieved from the original archive. But reloading it from file into a new archive object only succeeds for n<108 (in this case - other size expressions have different limits). Great package though. Our problem solution went from several hours under Macsyma to just 36 seconds with GiNaC! Will System: GiNaC 0.8.0 CLN 1.1.0 Linux Mandrake 7.2 AMD 700Mhz 128Mb