[squid-users] upgrading squid

Hi,
a question, our configuration current is;

Three identical box with:

    - Red Hat 7.2 (kernel 2.4.20 and 2048 filedescriptors) and 1Gb Ram.
    - Squid 2.4 Stable 7.
    - 3 cache drives of 18 Gb/u (kind of storage is -ufs- ) with
reiserfs.
    - Cache replacement policy is the default (lru)
    - Cache mem is the default (8 mb )

and we have an average of 5000-7000 users a day, and some data of
cachemgr are (any day) :
    - 65.000.000 Request http
    - 30-34% Request hit ratios
    - 3-7% Memory Hit Ratios
    - 5000 Request http/minute

and all work is ok, but we are thinking update squid and configuration such:

    - Red Hat 7.3. (and identical configuration than previous)
    - Squid 2.5 Stable 2/3.
    - 3 cache drives of 18Gb/u (with aufs) and ext2fs (here, Henrik was
recommended at least 4 cache drives, to affect the performance? )
    - Cache replacement and cache_mem default.

Any sugestion ?

Thanks in advance.

Emilio.
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