Indexation and cache problems

Hi,

Here's our production environment :

Windows Server 2005
2Gig RAM
2 x 3.4 MHz
---------------------
Jahia 4.05
1849 pages


We experience two problems with the search engine :

- Its seems the content of many public pages is not indexed.

- The re-indexing takes more than 20 hours !


Our caches are currently saturated. Tomcat takes 1,2 Gig of RAM.

Here's our cache configuration :

max_cached_HTMLCache                                   =   2500
max_cached_ContainerCache                              =   30000
max_cached_ContentContainerCache                   =   35000
max_cached_ContentFieldCache                          =   250000
max_cached_FieldIDsByContainerCache               =   50000
max_cached_LockPrerequisitesResultMap            =   25000
max_cached_TextFileCache                                 =   15000

I've notice some tables with a high number of rows :
The "jahia_acl" tables counts over 350 000 rows.
The "jahia_ctn_entries" tables counts over 45 000 rows.
The "jahia_link" tables counts over 60 000 rows.


Any suggestions would be greatly appreciated.


Regards,

Nicolas