Getting 600 online, all DC! - Help

Max connections is not the problem here.
Its something in my.cnf that i need to edit:

[mysqld]
local-infile=0
skip-locking
query_cache_size=0
max_connections=1000
interactive_timeout=100
wait_timeout=100
connect_timeout=10
thread_cache_size=128
key_buffer=16M
key_buffer_size=256M
join_buffer=1M
join_buffer_size=1M
max_allowed_packet=16M
table_cache=2048
record_buffer=1M
sort_buffer_size=2M
read_buffer_size=2M
max_connect_errors=100
# Try number of CPU?^?^?s*2 for thread_concurrency
thread_concurrency=8
myisam_sort_buffer_size=64M
server-id=1
tmp_table_size=64M
max_heap_table_siz=64M
innodb_buffer_pool_size=128M

[safe_mysqld]
err-log=/var/log/mysqld.log
open_files_limit=8192

[mysqldump]
quick
max_allowed_packet=16M

[mysql]
no-auto-rehash
#safe-updates

[isamchk]
key_buffer=64M
sort_buffer=64M
read_buffer=16M
write_buffer=16M

[myisamchk]
key_buffer=64M
sort_buffer=64M
read_buffer=16M
write_buffer=16M

[mysqlhotcopy]
interactive-timeout

Many thanks for replies!

Increase all the values, test the limits. :)
For 600 online, your config really sucks.

Increase max_connections to 6000
and max_connect_errors to 1000

Increase poolsizes and prattically everything. Im pretty amazed how you can get 600 onlines with that terrible setup...

Maybe your proxy is unstable.