apache server problem

my server always experienced connection loss problem during rush hour. I need to refresh my browser few times before getting connection to it. I would happy if anyone can show me what's wrong with my server in this case? great thanks
here is little log from 'top'
4:11am up 2 days, 23:58, 1 user, load average: 0.02, 0.36, 0.74
156 processes: 154 sleeping, 2 running, 0 zombie, 0 stopped
CPU states: 8.2% user, 4.7% system, 0.0% nice, 87.0% idle
Mem: 256332K av, 145944K used, 110388K free, 228020K shrd, 25348K buff
Swap: 313228K av, 19608K used, 293620K free 17632K cached

 

 

 

 

Top