help needed on log entries, seems to Apache hangs

["Arnab Ganguly" <aganguly01@xxxxxxxxx>]

Hi All,
I am using Apache 2.2 Worker in Red-Hat 3.0.
Following are the behaviors observed in my access logs.
1) Sometime for a particular second there is no entry in the access log although the server was up and it was fed by HTTP request.

2) Time stamp in the access log entry sometimes come in irregular way, like the time of entry for 40th sec is before than the the entry happened in 30th sec.

3)When I do a tail in the access log , sometime my terminal hangs , means I don't get any entry in the access log but again after sometime I see entries.Even the file size also does not seems to be growing during this particular instance.

Is Apache is hanging because of heavy traffic???What would be the work around for this?
Any help would be very much appreciated.
Thanks in advance.
Regards
-A