Vacuum full since 15 hours

Hi,

I have a small question ... right now on a 8.1.10 version of PostgreSQL I'm
doing a vacuum full verbose anaylze a table with 60 304 340 rows in 1155791
pages and there were 16 835 144 unused item pointers inside and 5 index.

After the first treatment of the index (appeared in the verbose) ... the
vacuum is still working now since 15 hours ... There is none other activity
on this server ... it's a replication server ... so the vacuum is locking
most of the replication queries ...
What can I do to get this doing quicker ...?
It's a 8Gb server ... with a RAID 10 ... my maintenance_work_mem = 25600.

Any idea ?
I'm sure that if I delete all the index an rebuild them by hand it'll be
really quicker ! (done on another replication server ... took 20 min)

regards,
--
Hervé Piedvache