Vacuum Full - stops responding(?)

Hello,

I have problem with VACUUM FULL on one table

Table statistics
Statistic                   Value
Sequential Scans             455
Sequential Tuples Read       114059927
Index Scans                 135554861
Index Tuples Fetched         152172886
Tuples Inserted             2281476
Tuples Updated              67287404
Tuples Deleted              2254901
Heap Blocks Read             449369371
Heap Blocks Hit             2969477465
Index Blocks Read           171509578
Index Blocks Hit             2947370213
Toast Blocks Read           7105675639
Toast Blocks Hit            151665604
Toast Index Blocks Read     59614577
Toast Index Blocks Hit       679416492
Table Size                  397 MB
Toast Table Size             157 GB
Indexes Size                177 MB

Code:
db1=# reindex table pg_toast.pg_toast_17929229; vacuum full verbose
sch1.myobjects;
REINDEX
VACUUM
INFO:  vacuuming "sch1.myobjects"
INFO:  "myobjects": found 8359 removable, 265619 nonremovable row
versions in 25899 pages
DETAIL:  0 dead row versions cannot be removed yet.
Nonremovable row versions range from 96 to 2032 bytes long.
There were 286682 unused item pointers.
Total free space (including removable row versions) is 81949164 bytes.
5540 pages are or will become empty, including 1 at the end of the table.
18640 pages containing 81678752 free bytes are potential move destinations.
CPU 0.47s/0.06u sec elapsed 1.69 sec.
INFO:  index "myobjects_pkey" now contains 265619 row versions in 1503 pages
DETAIL:  8359 index row versions were removed.
70 index pages have been deleted, 70 are currently reusable.
CPU 0.05s/0.10u sec elapsed 1.55 sec.
INFO:  index "mob" now contains 265619 row versions in 4855 pages
DETAIL:  8359 index row versions were removed.
358 index pages have been deleted, 358 are currently reusable.
CPU 0.20s/0.12u sec elapsed 9.42 sec.
INFO:  index "so_idt" now contains 265619 row versions in 1506 pages
DETAIL:  8359 index row versions were removed.
75 index pages have been deleted, 75 are currently reusable.
CPU 0.07s/0.12u sec elapsed 1.44 sec.
INFO:  index "so_obclass" now contains 265619 row versions in 1938 pages
DETAIL:  8359 index row versions were removed.
10 index pages have been deleted, 10 are currently reusable.
CPU 0.04s/0.10u sec elapsed 3.74 sec.
INFO:  index "so_obstring" now contains 265619 row versions in 3240 pages
DETAIL:  8359 index row versions were removed.
218 index pages have been deleted, 218 are currently reusable.
CPU 0.09s/0.15u sec elapsed 5.03 sec.
INFO:  "myobjects": moved 8244 row versions, truncated 25899 to 15998 pages
DETAIL:  CPU 1.98s/2.05u sec elapsed 25.51 sec.
INFO:  index "myobjects_pkey" now contains 265619 row versions in 1503 pages
DETAIL:  8244 index row versions were removed.
76 index pages have been deleted, 76 are currently reusable.
CPU 0.04s/0.05u sec elapsed 0.09 sec.
INFO:  index "mob" now contains 265619 row versions in 4855 pages
DETAIL:  8244 index row versions were removed.
397 index pages have been deleted, 397 are currently reusable.
CPU 0.13s/0.05u sec elapsed 0.19 sec.
INFO:  index "so_idt" now contains 265619 row versions in 1506 pages
DETAIL:  8244 index row versions were removed.
81 index pages have been deleted, 81 are currently reusable.
CPU 0.04s/0.05u sec elapsed 0.09 sec.
INFO:  index "so_obclass" now contains 265619 row versions in 1964 pages
DETAIL:  8244 index row versions were removed.
690 index pages have been deleted, 690 are currently reusable.
CPU 0.07s/0.04u sec elapsed 0.12 sec.
INFO:  index "so_obstring" now contains 265619 row versions in 3240 pages
DETAIL:  8244 index row versions were removed.
240 index pages have been deleted, 240 are currently reusable.
CPU 0.08s/0.06u sec elapsed 0.14 sec.
INFO:  vacuuming "pg_toast.pg_toast_17929229"
INFO:  "pg_toast_17929229": found 6203 removable, 257509 nonremovable
row versions in 20509016 pages
DETAIL:  0 dead row versions cannot be removed yet.
Nonremovable row versions range from 45 to 2030 bytes long.
There were 87521183 unused item pointers.
Total free space (including removable row versions) is 166910212580 bytes.
20384082 pages are or will become empty, including 3 at the end of the table.
20507826 pages containing 166910155528 free bytes are potential move
destinations.
CPU 412.14s/58.08u sec elapsed 3632.16 sec.
INFO:  index "pg_toast_17929229_index" now contains 257509 row
versions in 709 pages
DETAIL:  0 index row versions were removed.
0 index pages have been deleted, 0 are currently reusable.
CPU 0.02s/0.15u sec elapsed 0.22 sec.
^^This is the last message...
After 10 hours nothing new appear... What is going on with this vacuum?

VACUUM ANALYZE is OK

Code:
db1=# vacuum analyze verbose sch1.myobjects;
(...)
INFO:  vacuuming "pg_toast.pg_toast_17929229"
INFO:  index "pg_toast_17929229_index" now contains 260391 row
versions in 1279 pages
DETAIL:  194099 index row versions were removed.
0 index pages have been deleted, 0 are currently reusable.
CPU 0.01s/0.16u sec elapsed 0.18 sec.
INFO:  "pg_toast_17929229": removed 196567 row versions in 42846 pages
DETAIL:  CPU 0.05s/0.32u sec elapsed 1.24 sec.
INFO:  "pg_toast_17929229": found 196567 removable, 257570
nonremovable row versions in 20510280 pages
DETAIL:  321 dead row versions cannot be removed yet.
There were 87339448 unused item pointers.
0 pages are entirely empty.
CPU 266.24s/51.49u sec elapsed 1920.18 sec.
INFO:  analyzing "sch1.myobjects"
INFO:  "myobjects": scanned 3000 of 16620 pages, containing 48341 live
rows and 1107 dead rows; 3000 rows in sample, 267809 estimated total
rows
db1=#

There is no 'idle in transaction' postgres processes..
Why vacuum full stops responding? :(