Sass change detected but style.css only overwritten every 5th - 7th time I save

Question

I am using Sass and Ruby (newest version) on a Windows 7 64-bit machine, and I am working on a shared folder on my home server. (But, I have to admit the problem itself occurs on the server as well, since I tried to install Ruby and -watch the files on the server directly).

The problem is as follows: if I save for the first time, a change is detected and my style.css gets overwritten directly. After that, I always need to save up to 7 times in order to get the style.css overwritten. Every time, there is a change detected but nothing is compiled. Here's a screen:

>>> Sass is watching for changes. Press Ctrl-C to stop.
overwrite style.css
>>> Change detected to: E:/Websites/xxx/wp-content/themes/xxx/sass/default-styles.sass
>>> Change detected to: E:/Websites/xxx/wp-content/themes/xxx/sass/default-styles.sass
>>> Change detected to: E:/Websites/xxx/wp-content/themes/xxx/sass/default-styles.sass
>>> Change detected to: E:/Websites/xxx/wp-content/themes/xxx/sass/default-styles.sass
>>> Change detected to: E:/Websites/xxx/wp-content/themes/xxx/sass/default-styles.sass
>>> Change detected to: E:/Websites/xxx/wp-content/themes/xxx/sass/default-styles.sass
>>> Change detected to: E:/Websites/xxx/wp-content/themes/xxx/sass/default-styles.sass
overwrite style.css

Here is glance at my base.sass, which imports all the partials:

// Core variables and mixins
@import variables

// Default HTML Formatting
@import default-styles

// Grid
@import grid

// Header and Menus
@import header

// Blog
@import blog

Has anyone had a similar issue on Windows?

Answer 1

This question was answered in the comments. The issue was caused by server-client time differences, so that the server wouldn't initiate the update until the timestamp exceeded the time difference.

I am posting this answer so that the question will be correctly marked as answered.