As you all may know, Minecraft is being updated to 1.2 in the coming days. I've been checking over the changelogs that are currently viewable, and noticed a few that could be problematic to Hawknet SMP.
The first thing is that the update may be using is a new map format. This will call for a new SMP map, as the old one will be incompatible. There may be a method of converting to the new map system, however the last system for this didn't work.
If the map still uses the players inventory system, I will try to move the inventories over. There is no guarantee that this works though, and will need to be tested.
The second issue is that coming with the new map system, and new co-ordinate system will be used. The current co-ordinate system is X/Z/Y, where X is West and East, Z is Up and Down, and Y is North and South. The new system will be Y/Z/X, where Y is West and East, and X is North and South. This means that every single plugin that does anything with blocks, block locations, or player positions will need to be updated. It is a relatively simple fix (change the x to y, and vice versa), however we are depending on the developers to fix it.
From the top of my head, the plugins that will be effected are:
Essentials
MyWarp
LogBlock
LWC
Factions
Multiverse
There may be others, but I can't think of them now. Some of these may be out of date (I haven't updated LWC in a while because there has been no need, but if it's discontinued, there'll be no more LWC.
In conclusion, Hawknet SMP will not be updating to 1.2 until all major plugins have been updated to work with it. After that, we'll go through the updating phase, in which case a new map will be made. I will attempt to save the Creative map, and in a lighter note, there seems to be some rumours that a Skylands world type will return (Skylands was replaced by The_End in 1.0).
So, don't update your clients until we're ready, or at least keep a backup of your 1.1 installation. They are stored in static locations on various operating systems, and can be found:
Windows: C:\Users\<username>\AppData\Roaming\.minecraft\bin\minecraft.jar
Max OS X: ~/Library/Application Support/minecraft/bin/minecraft.jar
Linux: ~/.minecraft/bin/minecraft.jar
I use the method above, of renaming my minecraft.jar's to the version so they're easily refrencable. I currently have the installations back to 1.2 Beta, named minecraft.jar.b1.2, minecraft.jar.b1.3, minecraft.jar.b1.4, etc. I find this the best method, however I am not at liberty to distribute it due to Mojang's Terms and Conditions, so you'll have to make your backup yourself. ^^
We hope you find this informative, and hope you enjoy Hawknet SMP and Minecraft, and we apologise for the inconvenience.