Craftbukkit makes my Computer (and Bukkit) Freeze & Crash!?

Hi. A couple of days ago I was running my Minecraft server just fine. After 1.2 came out, I downloaded the latest Dev build of Bukkit. After getting some of the plugins back, Bukkit started screaming that message along the lines of "Can't keep up! Did the system time change or blablabla?"! I can still play though. But after like 5 - 10 minutes Bukkit Freezes my computer and starts to lag. Tried different bukkit versions. My computer ain't that bad. Here are my specs and Bukkit version:
Amd a8 - 1.8 ~ 2.4 (Overclocked to 2.8) GHz
8gb Ram
500 GB disk (not needed LOL)
Radeon 6620g.
I am currently running the Latest recommended build of CraftBukkit (1.1 R6) although I have tried other versions. This error started occurring after 1.2. Before I was just fine with 50+ plugins!

 

a: did you try craftbukkit for 1.2.3 beta version
b: did you update plugins? (not some plugins have not updated yet)

 

I am trying 1.2.3 beta right now. So far, so good.

Ignore the post above me. My computer doesn't crash, but makes Minecraft and my Computer slow even though only 60% of my CPU is used. I think its the plugins. Ran it without plugins and it was just fine. What are the plugins that make Bukkit slow?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

I have the same problem right now....

My plugins are:
- Essentials
- EssentialsSpawn
- Vault
- mcMMO
- ChatManager
- Modifyworld
- PermissionsEX
- Playerstats-1.8
- WorldEdit

System:
- Pentium4 at 3 GHz 32x bit
- 2 GB RAM
- Radeon 9200 SE
- Windows XP

Minecraft 1.2.3 Beta

 

man bukkit wont even work for me it just makes my own laptop freeze completely someone plz help!

and i didnt work even without plugins

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Make your own topic, don't hijack someone else's.

Your computer may be unable to cope with the added CPU load of CB #2136 which fixed entity clipping issues.