Pb squidguard error_db permission denied

Bonjour,

voila j'ai ce message d'erreur dans mon fichier squidguard.log

2008-04-18 09:09:50 [4676] ending emergency mode, stdin empty
2008-04-18 09:09:50 [4673] ending emergency mode, stdin empty
2008-04-18 09:09:50 [4672] ending emergency mode, stdin empty
2008-04-18 09:09:50 [4675] ending emergency mode, stdin empty
2008-04-18 09:09:50 [4674] ending emergency mode, stdin empty
2008-04-18 09:09:53 [4766] New setting: logdir: /var/log/squidGuard
2008-04-18 09:09:53 [4766] New setting: dbhome: /var/lib/squidGuard/db
2008-04-18 09:09:53 [4766] init domainlist /var/lib/squidGuard/db/squidguard-blacklists/ads/domains
2008-04-18 09:09:53 [4766] Error db_open: Permission denied
2008-04-18 09:09:53 [4766] going into emergency mode
2008-04-18 09:09:53 [4767] New setting: logdir: /var/log/squidGuard
2008-04-18 09:09:53 [4767] New setting: dbhome: /var/lib/squidGuard/db
2008-04-18 09:09:53 [4767] init domainlist /var/lib/squidGuard/db/squidguard-blacklists/ads/domains
2008-04-18 09:09:53 [4767] Error db_open: Permission denied
2008-04-18 09:09:53 [4767] going into emergency mode
2008-04-18 09:09:53 [4768] New setting: logdir: /var/log/squidGuard
2008-04-18 09:09:53 [4768] New setting: dbhome: /var/lib/squidGuard/db
2008-04-18 09:09:53 [4768] init domainlist /var/lib/squidGuard/db/squidguard-blacklists/ads/domains
2008-04-18 09:09:53 [4768] Error db_open: Permission denied
2008-04-18 09:09:53 [4768] going into emergency mode
2008-04-18 09:09:53 [4770] New setting: logdir: /var/log/squidGuard
2008-04-18 09:09:53 [4770] New setting: dbhome: /var/lib/squidGuard/db
2008-04-18 09:09:53 [4770] init domainlist /var/lib/squidGuard/db/squidguard-blacklists/ads/domains
2008-04-18 09:09:53 [4770] Error db_open: Permission denied
2008-04-18 09:09:53 [4770] going into emergency mode
2008-04-18 09:09:53 [4769] New setting: logdir: /var/log/squidGuard
2008-04-18 09:09:53 [4769] New setting: dbhome: /var/lib/squidGuard/db
2008-04-18 09:09:53 [4769] init domainlist /var/lib/squidGuard/db/squidguard-blacklists/ads/domains
2008-04-18 09:09:53 [4769] Error db_open: Permission denied
2008-04-18 09:09:53 [4769] going into emergency mode

je voudrai savoir a quoi cela est du, j'ai cherher sur le net il mette que c'est un probleme de droit d'utilisateur, cependant je n'arrive pas à, si quelqu'un a une idée je usi preneur. quitte a m'envoyer une blacklist que je peux directement utiliser sans changer les droits.