unitialized page on 7.3.5

Hi everyone,

Since yesterday I've noticed the errors bellow on one on the most updated
tables in a database.
This db is vaccumed analyzed every half an hour...

Any idea what could cause it and if I could loose data?

Regards

--
Jan 23 13:32:09 server postgres[2425]: [6] WARNING: Rel sessions_log: Uninitialized page 3 - fixing
Jan 23 13:32:09 server postgres[2425]: [7] WARNING: Rel sessions_log: Uninitialized page 4 - fixing
Jan 23 13:32:09 server postgres[2425]: [8] WARNING: Rel sessions_log: Uninitialized page 5 - fixing
Jan 23 13:32:09 server postgres[2425]: [9] WARNING: Rel sessions_log: Uninitialized page 6 - fixing
Jan 23 13:32:09 server postgres[2425]: [10] WARNING: Rel sessions_log: Uninitialized page 7 - fixing
Jan 23 13:32:09 server postgres[2425]: [11] WARNING: Rel sessions_log: Uninitialized page 8 - fixing
Jan 23 13:32:09 server postgres[2425]: [12] WARNING: Rel sessions_log: Uninitialized page 9 - fixing
Jan 23 13:32:09 server postgres[2425]: [13] WARNING: Rel sessions_log: Uninitialized page 10 - fixing
Jan 23 13:32:09 server postgres[2425]: [14] WARNING: Rel sessions_log: Uninitialized page 11 - fixing
Jan 23 13:32:09 server postgres[2425]: [15] WARNING: Rel sessions_log: Uninitialized page 12 - fixing
Jan 23 13:32:09 server postgres[2425]: [16] WARNING: Rel sessions_log: Uninitialized page 13 - fixing
Jan 23 13:32:09 server postgres[2425]: [17] WARNING: Rel sessions_log: Uninitialized page 14 - fixing
Jan 23 13:32:09 server postgres[2425]: [18] WARNING: Rel sessions_log: Uninitialized page 15 - fixing
Jan 23 13:32:09 server postgres[2425]: [19] WARNING: Rel sessions_log: Uninitialized page 16 - fixing
Jan 23 13:32:09 server postgres[2425]: [20] WARNING: Rel sessions_log: Uninitialized page 17 - fixing
Jan 23 13:32:09 server postgres[2425]: [21] WARNING: Rel sessions_log: Uninitialized page 18 - fixing
Jan 23 13:32:09 server postgres[2425]: [22] WARNING: Rel sessions_log: Uninitialized page 19 - fixing
Jan 23 13:32:09 server postgres[2425]: [23] WARNING: Rel sessions_log: Uninitialized page 20 - fixing
Jan 23 13:32:09 server postgres[2425]: [24] WARNING: Rel sessions_log: Uninitialized page 21 - fixing
Jan 23 13:32:09 server postgres[2425]: [25] WARNING: Rel sessions_log: Uninitialized page 22 - fixing
Jan 23 13:32:09 server postgres[2425]: [26] WARNING: Rel sessions_log: Uninitialized page 23 - fixing
Jan 23 13:32:09 server postgres[2425]: [27] WARNING: Rel sessions_log: Uninitialized page 24 - fixing
Jan 23 13:32:09 server postgres[2425]: [28] WARNING: Rel sessions_log: Uninitialized page 25 - fixing
Jan 23 13:32:09 server postgres[2425]: [29] WARNING: Rel sessions_log: Uninitialized page 26 - fixing
Jan 23 13:32:09 server postgres[2425]: [30] WARNING: Rel sessions_log: Uninitialized page 27 - fixing
Jan 23 13:32:09 server postgres[2425]: [31] WARNING: Rel sessions_log: Uninitialized page 28 - fixing
Jan 23 13:32:09 server postgres[2425]: [32] WARNING: Rel sessions_log: Uninitialized page 29 - fixing
Jan 23 13:32:09 server postgres[2425]: [33] WARNING: Rel sessions_log: Uninitialized page 30 - fixing
Jan 23 13:32:09 server postgres[2425]: [34] WARNING: Rel sessions_log: Uninitialized page 31 - fixing
Jan 23 13:32:09 server postgres[2425]: [35] WARNING: Rel sessions_log: Uninitialized page 32 - fixing

--
Olivier PRENANT Tel: +33-5-61-50-97-00 (Work)
6, Chemin d'Harraud Turrou +33-5-61-50-97-01 (Fax)
31190 AUTERIVE +33-6-07-63-80-64 (GSM)
FRANCE Email: ohp(at)pyrenet(dot)fr
------------------------------------------------------------------------------
Make your life a dream, make your dream a reality. (St Exupery)