I've tried to get a heap retaining profile (-hr) of my (largish) program with GHC 6.2.1 (on Windows NT4), but it segfaults when run. I can produce a -hc profile without grief. Is this a known problem? P.S. I've trimmed my program back a bit to provide a test case (and to remove FFI code), but there are still five modules involved. ----------------------------------------- ***************************************************************** Confidentiality Note: The information contained in this message, and any attachments, may contain confidential and/or privileged material. It is intended solely for the person(s) or entity to which it is addressed. Any review, retransmission, dissemination, or taking of any action in reliance upon this information by persons or entities other than the intended recipient(s) is prohibited. If you received this in error, please contact the sender and delete the material from any computer. *****************************************************************