[quote user="weamish"]Version 4.31.[/quote]

Please upgrade to the latest version before we start getting into details, and if you've got IE 9 installed you may need to update IERenderer separately after doing so. Aside from this here are lots of posts dealing with crashes of various kinds.

Version 4.31. Tried to move a message from New Mail to another folder, got message: "An error has occurred saving your copy of the message and no copy has been made." If I close Peg then reopen it, I get message: "The mailbox you are attempting to access appears to be locked..." When I click Continue, Peg immediately shuts down. A reboot (or sometimes 2 reboots) seems to clear up the problems. Just wondering what might be going on, and how to avoid this situation (it happens sporadically, then Peg works fine for a few months before it happens again). Any ideas? Thanks!

Steve