I now believe that sleep deprivation made me think that this bug was related to mine.
So I created  a new bug #1415654 for mine.

Original poster have some OutOfMemory error (kind that kill "random" process to find memory) in his syslog:
/***
Oct 13 10:59:34 mint nautilus: [N-A] Nautilus-Actions Tracker 3.0.5 initializing...
Oct 13 11:00:27 mint kernel: [  222.877241] python invoked oom-killer: gfp_mask=0x280da, order=0, oom_adj=0, oom_score_adj=0
Oct 13 11:00:27 mint kernel: [  222.877249] python cpuset=/ mems_allowed=0
Oct 13 11:00:27 mint kernel: [  222.877253] Pid: 3427, comm: python Not tainted 2.6.38-8-generic #42-Ubuntu
Oct 13 11:00:27 mint kernel: [  222.877257] Call Trace:
Oct 13 11:00:28 mint kernel: [  222.877268]  [<c10e4df5>] ? dump_header.clone.5+0x85/0x1b0
Oct 13 11:00:28 mint kernel: [  222.877275]  [<c1276429>] ? ___ratelimit+0x89/0x110
Oct 13 11:00:28 mint kernel: [  222.877279]  [<c10e5294>] ? oom_kill_process+0x64/0x160
Oct 13 11:00:28 mint kernel: [  222.877283]  [<c10e540d>] ? select_bad_process.clone.7+0x7d/0x100
Oct 13 11:00:28 mint kernel: [  222.877287]  [<c10e572f>] ? out_of_memory+0xbf/0x1e0
Oct 13 11:00:28 mint kernel: [  222.877291]  [<c10e55ed>] ? try_set_zonelist_oom+0xcd/0xe0
Oct 13 11:00:28 mint kernel: [  222.877296]  [<c10e8e0b>] ? __alloc_pages_nodemask+0x6fb/0x710
Oct 13 11:00:28 mint kernel: [  222.877300]  [<c10e8b23>] ? __alloc_pages_nodemask+0x413/0x710
Oct 13 11:00:28 mint kernel: [  222.877306]  [<c10fdbe4>] ? do_anonymous_page+0x124/0x280
Oct 13 11:00:28 mint kernel: [  222.877310]  [<c1101548>] ? handle_pte_fault+0x1e8/0x210
Oct 13 11:00:28 mint kernel: [  222.877314]  [<c10fe82f>] ? __pte_alloc+0x9f/0xb0
Oct 13 11:00:28 mint kernel: [  222.877318]  [<c1101627>] ? handle_mm_fault+0xb7/0x120
Oct 13 11:00:28 mint kernel: [  222.877324]  [<c150ce00>] ? do_page_fault+0x0/0x490
Oct 13 11:00:28 mint kernel: [  222.877328]  [<c150cf5e>] ? do_page_fault+0x15e/0x490
Oct 13 11:00:28 mint kernel: [  222.877333]  [<c11059c3>] ? sys_mmap_pgoff+0x73/0x1d0
Oct 13 11:00:28 mint kernel: [  222.877339]  [<c151087b>] ? smp_apic_timer_interrupt+0x5b/0x8a
Oct 13 11:00:28 mint kernel: [  222.877343]  [<c150ce00>] ? do_page_fault+0x0/0x490
Oct 13 11:00:28 mint kernel: [  222.877346]  [<c150a2df>] ? error_code+0x67/0x6c
Oct 13 11:00:28 mint kernel: [  222.877351]  [<c1500000>] ? print_cpu_info+0xe3/0x126
Oct 13 11:00:28 mint kernel: [  222.877354] Mem-Info:
Oct 13 11:00:28 mint kernel: [  222.877356] DMA per-cpu:
Oct 13 11:00:28 mint kernel: [  222.877359] CPU    0: hi:    0, btch:   1 usd:   0
Oct 13 11:00:28 mint kernel: [  222.877361] Normal per-cpu:
Oct 13 11:00:28 mint kernel: [  222.877364] CPU    0: hi:  186, btch:  31 usd:   0
Oct 13 11:00:28 mint kernel: [  222.877370] active_anon:75674 inactive_anon:15302 isolated_anon:0
Oct 13 11:00:28 mint kernel: [  222.877371]  active_file:11495 inactive_file:11693 isolated_file:64
Oct 13 11:00:28 mint kernel: [  222.877373]  unevictable:0 dirty:0 writeback:0 unstable:0
Oct 13 11:00:28 mint kernel: [  222.877374]  free:1201 slab_reclaimable:2874 slab_unreclaimable:2829
Oct 13 11:00:28 mint kernel: [  222.877375]  mapped:12984 shmem:33386 pagetables:1097 bounce:0
Oct 13 11:00:28 mint kernel: [  222.877385] DMA free:2028kB min:88kB low:108kB high:132kB active_anon:9408kB inactive_anon:1112kB active_file:1044kB inactive_file:1292kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15804kB mlocked:0kB dirty:0kB writeback:0kB mapped:1908kB shmem:1772kB slab_reclaimable:300kB slab_unreclaimable:372kB kernel_stack:112kB pagetables:180kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:5835 all_unreclaimable? yes
Oct 13 11:00:28 mint kernel: [  222.877392] lowmem_reserve[]: 0 484 484 484
Oct 13 11:00:28 mint kernel: [  222.877403] Normal free:2776kB min:2768kB low:3460kB high:4152kB active_anon:293288kB inactive_anon:60096kB active_file:44936kB inactive_file:45480kB unevictable:0kB isolated(anon):0kB isolated(file):256kB present:495628kB mlocked:0kB dirty:0kB writeback:0kB mapped:50028kB shmem:131772kB slab_reclaimable:11196kB slab_unreclaimable:10944kB kernel_stack:1936kB pagetables:4208kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:861980 all_unreclaimable? yes
Oct 13 11:00:28 mint kernel: [  222.877410] lowmem_reserve[]: 0 0 0 0
Oct 13 11:00:28 mint kernel: [  222.877415] DMA: 9*4kB 27*8kB 17*16kB 7*32kB 8*64kB 6*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 2028kB
Oct 13 11:00:28 mint kernel: [  222.877427] Normal: 688*4kB 1*8kB 1*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 2776kB
Oct 13 11:00:28 mint kernel: [  222.877438] 56642 total pagecache pages
Oct 13 11:00:28 mint kernel: [  222.877440] 0 pages in swap cache
Oct 13 11:00:28 mint kernel: [  222.877443] Swap cache stats: add 0, delete 0, find 0/0
Oct 13 11:00:28 mint kernel: [  222.877445] Free swap  = 0kB
Oct 13 11:00:28 mint kernel: [  222.877447] Total swap = 0kB
Oct 13 11:00:28 mint kernel: [  222.880230] 128963 pages RAM
Oct 13 11:00:28 mint kernel: [  222.880234] 0 pages HighMem
Oct 13 11:00:28 mint kernel: [  222.880236] 4039 pages reserved
***/ 
Which could well explain the broken pipe error 32 that made me think it was linked to my problem.
Seems to suggest 512Mb was not enough for installation.