Wordpress- Nextgen Gallery Problem

Issue:

In Nextgen Gallery Plugins..

This error comes up when we want to upload pictures in gallery..
Upload failed! Failed to write file to disk

Upload Media also got Errors
Error saving media attachment.

I do:
Set all permission to all related folders to 777, still get the same errors.
Then I search the same problem in internet, and found this:
Have you exceeded your disk space quota?
http://bytes.com/topic/php/answers/820628-wordpress-image-upload-failed-write-disk-urgent

Then I inform server guy to check on the server space for this issue..


Solution:
Check /var/log/snmpd.log for www server.
Clear all log in the log file. Thats all.

Try back to upload the picture in gallery. See.. it works!
Thanks to all colleagues for helping me overcome this issue.

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