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Once power on the system, after some time the GUI of all most all window has changed (look at the image). Into thunderbird all text are overlapped and display mashed up. Into Geany color all tabs and code are changed. I need to close those apps and reopen it to view it correctly. I have 1 GB of RAM. I am new to ubuntu.

can any body help me what it the problem? and how to solve it? I have read the question Weird Ubuntu 11.10 GUI problem , but it does not solve my problem.

Thanks

EDIT

I have tried the solution given by maythux, but it does not solve my problem. After applied his solution my page looks like this:

enter image description here

I do not want this. I want my same theme without mash up the graphics. And permanent solution. If anybody has solution of it please give me.

share|improve this question
    
I have experienced these problems anytime in a day and the frequency of the problem was also not fixed. so, to get rid of it I have asked question here, we have two ubuntu with same configuration and both have some problem. Before I have asked you question I have experienced it, but don't know about its next occurrence. –  pkachhia Oct 13 '12 at 9:02
    
ok I will. Whenever I got the problem I need to fire the commands you have give me? or it will solve it for forever? I have confusion please answer it. –  pkachhia Oct 13 '12 at 9:11
    
ok thanks for the answer –  pkachhia Oct 13 '12 at 9:13
    
No expert there who can solve my problem? –  pkachhia Oct 18 '12 at 5:46
    
Is the problem still presists ? use @suhaib to reply to me :-) –  Suhaib Feb 20 '13 at 3:43

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