Getting Out of Memmory Error

Hello, Currently Running Bukit 1185 and lately been getting out of memmory errors
Current Plugins are:

AutoMessage
CommandHelper
COntrollerBlock
CookieMonster
Essetials
EssentialsChat
EssentialsGroupBridge
EssentialsGRoupManager
Essentailsrotect
EssentialsSpawn
GroupPVP
HeroChat
iConomy
InventorySort
Jail
LyTreeHelper
MyHome
Questioner
RemoveExpOrbs
Towny
VanishNoPickup
Votifier
WorldEdit
WorldGuard

Currently I am NOT using any MySQL databases for any plugins.

Currently minecraft has allocated 3840megs of ram (from 4gigs) currently using MineOS+
I was running at 50 slots, and reduced it to 25.. Im just wondering if with my current plugins if this seems to be correct(25 slots) or should I be able to support more slots?

 

What version of Java are you running and what do you know about the processor on this server?

 

processor = 6core AMD 3.8ghz
I think its running java 6 32bit
MineOS+ is 32bit
I am not using Virtual Box, its running strait from the machine
Also would Setting view-distance from 10 to 7 lower ram usage?

 

You plugins need some updateing.

If you are using bukkit 1185 You need to make sure you are not using any plugins that are not updated.
(Some 1060 plugins will work but this is not a guarantee so its best to get rid of them to troubleshoot your server)

Second.. I see you are using Group Manager still. Some changes to bukkit have recently broken this plugin. You need to start thinking about changing your permission manager as well. I recommend permissionsBukkit

After updating all your plugins to 1185 and removing all old un updated plugins see if you still have this issue.