Check your connection
The PS3 with an internet connection
Because of your internet connection
You need a PS3 with an internet connection to the Playstation Network and a Playstation Network account. You also need the LittleBigPlanet 2 game
You can't "fix the connection to Minecraft" it's all on your current holder, and bandwidth.
Get a faster Internet connection.
To fix a slow Limewire connection you need to uninstall the Limewire software and redownload the new version of Limewire.
You have an online connection and money in your Playstation Wallet and then you purchase the item in the Playstation Store
If your internet is working fine, there is no need to fix it.
you have to play a few levels maybe even stages.
No LittleBigPlanet is a Playstation Portable and PS3 game not an online free game. It can be played on the Playstation Network only by individuals who have internet connection to the Playstation 3 consoles or PSP devices and copies of the game they have purchased
Check the network connection.
The "Gun" in littleBigPlanet is from the "MetalGearSolid" Gamepack. It is available on the PSN (PlayStation network). With the purchase of that gamepack you can now make levels containing the "Paintinator". (The gun you are refering to). If you do NOT have an internet connection for your playstation 3 then you cannot get the gun. I would suggest you getting a connection to your PlayStation 3 if you do not have it yet as there are many addons for games just like the one I just described for you. Hope this helps