Out of number order partitions.
Partitions.
Looking at it that way == logical order
This is physical order:
Device Boot Start End Blocks Id System
/dev/hda1 * 1 1034 8305573+ 7 HPFS/NTFS
/dev/hda2 1035 9686 69497190 f W95 Ext'd (LBA)
/dev/hda5 1035 1934 7229187 83 Linux
/dev/hda3 1935 7034 40965718+ 35 Unknown
/dev/hda6 7035 7642 4883728+ 83 Linux
/dev/hda7 7643 8007 2931831 83 Linux
/dev/hda8 8008 8227 1767118+ 82 Linux swap / Solaris
/dev/hda9 8228 8276 393561 83 Linux
/dev/hda10 8277 9686 11325793+ 83 Linux
/dev/hda4 9687 9729 345397+ 83 Linux
This is typical of using other partitioning tools other than "GNU tools" or things like fdisk or cfdisk.
I am assuming you've used a different partitioning tool at one time or another.
1 & 4 are primary partitions, 2 is an Extended Container, 5,3,6,7,8,9,10 are all extended partitions.
Hope that helps.