The new pine 4.30 is completely broken, it crashes on opening certain folders. It appears that the crashes are triggered by certain folder-contents, because it will (repeatedly) crash on opening some folders, and never on others. I estimate that it crashes on something like 3-5% of my folders, including remote folders like nntp-newsgroups. I've had the same problem with a version I compiled myself out of the official pine-sources, so it's unlikely that the problem is induced by RedHat spesifically. If required I can provide copies of my config-file, folders that crash pine, or other info you migth need.
I have done some more experimentation, and I'm only able to reproduce this with sorting set to the new "tHreaded" sorting. (which sorts by message-references) This feature is new in pine 4.30, so I've concluded that the likely bug is just here. Thus this will affect only a relatively small number of advanced pine users who use all the options, I've downgraded the bug to low severity.
Please provide me a copy of your config. Also, try to narrow down a folder to the minimum number of messages that trigger the flaw, and include the folder as well.
I've sent the requested info to mharris since I didn't see any way of adding files in this web-interface. If anyone else needs the files to reproduce the bug, feel free to contact me.
This bug is fixed in pine 4.31 available from washington.edu
Fixed in PINE 4.32 in Rawhide.