do you think coppermine make error for servers?

[Seleno]

Hello every one
i have coppermine in my site
and vbulletine,and image uploader
since about 6 months before i buy dediacated server,i was running my vbulletine forum and every things was okey
but when i installed coppermine,my site went down many time
i thaught its from forum or mysql
but when i moved to dedicated server,i also notice that when visitors visit coppermine i get error,may be it depend on much visits
coz before i install coppermine my server didn't restarted
so...is it coppermine problem?
or Mysql problem?

my server info:
Linux
CPU:Intel Celeron 2.0 GHz
RAM:512 MB
Storage:80 GB
Backup Storage:2 GB Included
Operating System:CentOS / Windows .NET
IP Addresses:3

i have about 15000 to 20,000 visits every day
my site running vbulletin,coppermine,and uploader
what do you think?

[Joachim Müller]

I suggest checking your server logs to find reasons for downtimes.