"Remote System Explorer Operation" causing freeze for couple of seconds

I observe "Remote System Explorer Operation" in Progress view of Eclipse after each save of Java file (so it might be related to compiling?). It makes the Eclipse unusable for 1 to 10 seconds. In some projects (of about the same size) it's quicker, in some it's slower.

I have no idea which plugin might be the cause for it. I have Build id: 20090920-1017. I have quite a few plugins installed.

I have tried turning all the remote systems to enabled=false under Preferences | Remote Systems (whatever it means). I didn't help.

Any idea how to solve it?

EDIT:

1. It doesn't happen when Project | Build automatically is turned off. So it's some part of the building process.

Solution 1:

Here are the steps:

1. Click on the Windows > Preferences menu
2. Select General > Startup and Shutdown in the tree
3. Uncheck RSE UI
4. Select Remote Systems in the tree
5. Uncheck Re-open Remote Systems view to previous state
6. Restart Eclipse

Note: You must have Eclipse 4.3.1 (or newer) due to a bug on previous version

Solution 2:

Here are the steps:

1. Click on the Windows > Preferences menu
2. Select General > Workspace > Build Order in the tree
3. Uncheck Use default build order
4. Select RemoteSystemsTempFiles
5. Click Remove Project
6. Click Apply and Close

Solution 3:

This was driving me crazy too.

Thanks to this topic I got to understand it was the plugin RSE, but I could not uninstall the Remote System Explorer plugin tool either. I had to remove all the plugins whose name started by org.eclipse.rse in plugins/, it's working now.