I updated the adobe flash plug-in from the Synaptic package manager.
The updation wasn't successful.
After that i started to experience issues with adobe flash plugin in browsers, i was not able to watch videos on youtube.
Now when i open synaptic manager it gives an error
run command **"sudo dpkg --configure -a"** in terminal.

when i run the command in terminal, it gives me an error, 

**"unable to fsync updated status of "hicolor-icon-theme": input/output error"**