Issue 1:
This happens when I'm trying to write a file directly in a remote FTP directory.

Try to open a remote FTP folder through Nautilus (Linux/Gnome).

Open a file from this folder with Atom.

Write something and save.

Atom Version: 0.194.0

System: linux 3.19.3-3-ARCH

Thrown From: Atom Core

Stack Trace

Uncaught Error: ESPIPE: invalid seek, write

At /usr/share/atom/resources/app.asar/src/pane.js:759

Error: ESPIPE: invalid seek, write
at Error (native)
at Object.fs.writeSync (fs.js:657:20)
at Object.fs.writeFileSync (fs.js:1164:21)
at Object.fsPlus.writeFileSync (/usr/share/atom/resources/app.asar/node_modules/fs-plus/lib/fs-plus.js:240:17)
at File.module.exports.File.writeFileSync (/usr/share/atom/resources/app.asar/node_modules/pathwatcher/lib/file.js:264:19)
at File.module.exports.File.writeFileWithPrivilegeEscalationSync (/usr/share/atom/resources/app.asar/node_modules/pathwatcher/lib/file.js:362:21)
at File.module.exports.File.writeSync (/usr/share/atom/resources/app.asar/node_modules/pathwatcher/lib/file.js:336:12)
at TextBuffer.module.exports.TextBuffer.saveAs (/usr/share/atom/resources/app.asar/node_modules/text-buffer/lib/text-buffer.js:913:17)
at TextBuffer.module.exports.TextBuffer.save (/usr/share/atom/resources/app.asar/node_modules/text-buffer/lib/text-buffer.js:899:19)
at TextEditor.module.exports.TextEditor.save (/usr/share/atom/resources/app.asar/src/text-editor.js:554:26)
at Pane.module.exports.Pane.saveItem (/usr/share/atom/resources/app.asar/src/pane.js:523:18)
at Pane.module.exports.Pane.saveActiveItem (/usr/share/atom/resources/app.asar/src/pane.js:506:19)
at Workspace.module.exports.Workspace.saveActivePaneItem (/usr/share/atom/resources/app.asar/src/workspace.js:574:35)
at atom-workspace.atom.commands.add.core:save (/usr/share/atom/resources/app.asar/src/workspace-element.js:310:30)
at CommandRegistry.module.exports.CommandRegistry.handleCommandEvent (/usr/share/atom/resources/app.asar/src/command-registry.js:238:29)
at /usr/share/atom/resources/app.asar/src/command-registry.js:3:61
at KeymapManager.module.exports.KeymapManager.dispatchCommandEvent (/usr/share/atom/resources/app.asar/node_modules/atom-keymap/lib/keymap-manager.js:519:16)
at KeymapManager.module.exports.KeymapManager.handleKeyboardEvent (/usr/share/atom/resources/app.asar/node_modules/atom-keymap/lib/keymap-manager.js:354:22)
at HTMLDocument.module.exports.WindowEventHandler.onKeydown (/usr/share/atom/resources/app.asar/src/window-event-handler.js:178:20)

Commands

-0:01.8.0 core:save (atom-text-editor.editor.is-focused)

Config

{
"core": {
"followSymlinks": true,
"autoHideMenuBar": true,
"themes": [
"one-light-ui",
"atom-light-syntax"
]
},
"editor": {
"fontFamily": "Monaco",
"showIndentGuide": true,
"tabLength": 4,
"useShadowDOM": true,
"invisibles": {},
"fontSize": 12
}
}

Installed Packages

# User
angularjs, v0.2.0
atom-beautify, v0.24.1
atom-html-preview, v0.1.6
atomui, vundefined
autoclose-html, v0.15.0
color-picker, v1.7.0
docblockr, v0.6.3
html-helper, v0.2.3
laravel, v0.4.2
script, v2.19.0
terminal-panel, v1.10.0

# Dev
No dev packages

Issue 2:
Title pretty much sums it up. No problems saving to a regular file system. SSHFS is fine too. I'm on Ubuntu 14.04 x64. I've encountered this error in various .99, .100, and .101 builds from the master branch.