SSH problem

[Rod James Bio <rjubio@gmail.com>]

I've been experiencing problems with my machine. After some time of 
remotely logging on it via ssh next thing is I knew is that I am 
disconnected and now I cannot login again via ssh and its giving me:

/no matching cipher found/: client server 
aes128-cbc,3des-cbc,blowfish-cbc,cast128
-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc *...

Any help? I dont know if this will help but after stopping the nagios 
daemon things went fine again.
*