Syslog CPU/Mem/IO Usage?

Hey guys,
I have a general question regarding syslog and its imposed usage on
the CPU/Mem/IO especially around scheduled cronjobs. We're currently
logging close to around 1.5-2gb of logs daily. One of the logs grows to
about 700-900mb daily on average. And, at least before we make the
changes, messages has duplicating the same entries (so
/var/log/messages 700-900mb+).
The concern we have is if any log entries might be dropping, or if
it's not even close to a possibility that they are dropping. One of my
coworkers expressed this concern, especially when crons are kicked off
- we have all the basic crons running daily: anacron, logrotate,
slocate, etc. Should we be concerned about the system not being able to
cache & buffer everything to the point where it starts dropping
information?
The hardware setup is pretty beefy as it is, so I wouldn't suspect
anything. But I wanted to make sure. My limited knowledge of the server
we're running:

Fedora Core 5 (2.6.15-1.2054_FC5smp)
3ghz Pentium 4 (I believe hyperthreading)
1gb RAM (DDR I'm suspecting - not sure of the bus speed)
Hardware Raid 5 setup over SATA (probably 4x 160gb)

Any ideas?
If this is sufficient enough for what we're doing now, is there a
'threshold' at which syslog, if ever, would drop its logging?

As of yet, I haven't noticed any major issues where there are gaps in
the logs. But I just wanted to find out if this is something to be
concerned about in the near-future as we expect our logging to
increase.

.

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