[Samba] Samba Performance

[rod]

Any ideas where i can get a "things to check" list for performace tuning of Samba

Currently copying 300mb of data since 09:00am this morning and still going ...now 12:20!

100mb full duplex nic  on a IBM x232 series dual proc Piii-1.2ghz, 512mb ram, raid 5 - 18.2gb drives

samba
----------
mandrake 8.2 with 2.2.5pre1
 according to smbstatus - locks are exclusive+batch

Locked files:
Pid    DenyMode   Access      R/W        Oplock           Name
--------------------------------------------------------------
2276   DENY_ALL   0x30196     WRONLY     EXCLUSIVE+BATCH  /var/apps/opera/data/s_aentry.cdx   Mon Oct 28 12:28:27 2000


any tips would be appreciated

kind regards
rod