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

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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

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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@pyrenet.fr
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