Bukkit

What steps will reproduce the problem?
1. Updated to latest bukkit (non dev)
2. cleared gods folder to have it recreate gods files
3. updated to gods 55
4. load gods to create files
5. copy back beleivers and gods list, restart server
6. gods loads
OR
7. run any commands after its loaded
OR
8. Wait a little while doing nothing
9. Get Errors on console

What is the expected output? What do you see instead?
Output seems correct, but server console throws errors, may be more serious issues.

What version of the product are you using?
55

Do you have an error log of what happened?

2012-09-29 14:03:06 [SEVERE] Exception in thread "pool-1-thread-1"
2012-09-29 14:03:06 [SEVERE] org.apache.commons.lang.UnhandledException: Plugin Gods v0.5.5 generated an exception while executing task 19
        at org.bukkit.craftbukkit.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ArithmeticException: / by zero
        at com.dogonfire.gods.GodManager.manageQuests(GodManager.java:2518)
        at com.dogonfire.gods.GodManager.update(GodManager.java:2657)
        at com.dogonfire.gods.Gods$1.run(Gods.java:424)
        at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:52)
        at org.bukkit.craftbukkit.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
        ... 3 more

2012-09-29 14:04:11 [INFO] [Gods v0.5.5] xPhoenixXx /gods list
2012-09-29 14:04:16 [SEVERE] Exception in thread "pool-1-thread-5"
2012-09-29 14:04:16 [SEVERE] org.apache.commons.lang.UnhandledException: Plugin Gods v0.5.5 generated an exception while executing task 19
        at org.bukkit.craftbukkit.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ArithmeticException: / by zero
        at com.dogonfire.gods.GodManager.manageQuests(GodManager.java:2518)
        at com.dogonfire.gods.GodManager.update(GodManager.java:2657)
        at com.dogonfire.gods.Gods$1.run(Gods.java:424)
        at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:52)
        at org.bukkit.craftbukkit.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
        ... 3 more

Please provide any additional information below.
Have resused gods and believers file after update. they appear to load ok as gods list and gods power seems correct.
Also re-enabled holy land, Also set quest frequency from 1 to 0.5 however config file altered it to 0, setting to 1 or 0 makes no difference.
Also appeared to loose all the altars, have to break/remake sign.  Not concerned about that.

I too get this error :P

This should now be fixed since 0.5.9