This also occurs with the 'Guided - resize' installation option. I installed once with the 'entire disk' option, which creates an extended partition containing the swap partition. The following install resizes the ext4 primary partition, then creates a new ext4 logical partition in the extended partition (makes sense so far), but then also adds another swap partition into the extended partition (leaving two logical swap partitions). Screen shot of partition layout attached.
Each system only uses one swap partition. They should probably share a single swap partition, because it's contents are only persistent during a hibernate, and it's not possible to leave one OS hibernated and boot into another OS. This is with the oneiric dev branch (ubuntu-alternate-amd64.iso from 2011-07-05) ** Attachment added: "Screenshot-16 GB Hard Disk (ATA VBOX HARDDISK) [-dev-sda] — Disk Utility.png" https://bugs.launchpad.net/ubuntu/+source/partman-auto/+bug/782507/+attachment/2193290/+files/Screenshot-16%20GB%20Hard%20Disk%20%28ATA%20VBOX%20HARDDISK%29%20%5B-dev-sda%5D%20%E2%80%94%20Disk%20Utility.png ** Tags added: iso-testing -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/782507 Title: Installation creates a new swap partition To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/partman-auto/+bug/782507/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs