vpnc dies with Interrupted system call and/or signal 15

I am trying to use vpnc (via kvpnc) with a profile that works working under Gutsy. However, I am getting disconnects every 30 seconds or so and this in syslog:

May 8 12:38:24 KuglerSKLaptop vpnc[9968]: select: Interrupted system call
May 8 12:38:24 KuglerSKLaptop vpnc[9968]: terminated by signal: 15
May 8 12:38:24 KuglerSKLaptop kernel: [ 643.794999] tun0: Disabled Privacy Extensions
May 8 12:38:49 KuglerSKLaptop vpnc[10096]: select: Interrupted system call
May 8 12:38:49 KuglerSKLaptop kernel: [ 654.382448] tun0: Disabled Privacy Extensions
May 8 12:39:14 KuglerSKLaptop vpnc[10234]: select: Interrupted system call
May 8 12:39:14 KuglerSKLaptop kernel: [ 664.648726] tun0: Disabled Privacy Extensions
May 8 12:39:39 KuglerSKLaptop vpnc[10380]: select: Interrupted system call
May 8 12:39:39 KuglerSKLaptop vpnc[10380]: terminated by signal: 15
May 8 12:39:39 KuglerSKLaptop kernel: [ 675.127971] tun0: Disabled Privacy Extensions
May 8 12:40:04 KuglerSKLaptop vpnc[10510]: select: Interrupted system call
May 8 12:40:04 KuglerSKLaptop kernel: [ 685.598069] tun0: Disabled Privacy Extensions
May 8 12:40:29 KuglerSKLaptop vpnc[10627]: select: Interrupted system call
May 8 12:40:29 KuglerSKLaptop vpnc[10627]: terminated by signal: 15
May 8 12:40:29 KuglerSKLaptop kernel: [ 697.304614] tun0: Disabled Privacy Extensions
May 8 12:40:54 KuglerSKLaptop vpnc[10761]: select: Interrupted system call
May 8 12:40:54 KuglerSKLaptop vpnc[10761]: terminated by signal: 15

Etc, etc.

I tried the gutsy packages, as well as the packages found here: https://bugs.launchpad.net/ubuntu/+source/vpnc/+bug/206673/comments/4

This does *not* appear to be a duplicate of #96427, as the message do not seem to have anything to do with dead peer detection.