Hi Julian, Thanks for valgrind!! It's wonderful. My box (SuSE Linux 8.0) has a Guile library with lots of problems. The attached suppression file pretty much gets rid of them. I don't know if they've fixed the issues after Guile-1.4, so I'm CC-ing them for their possible interest. I'm thinking that this should be incorporated into the default.supp when the Guile library version is 1.4. Cheers - Bruce