[Bugs] #1316 UNSP: holding Alt key for some time while in the home view locks up machine temporarily

[SugarLabs Bugs]

#1316: holding Alt key for some time while in the home view locks up machine
temporarily
------------------------------------------+---------------------------------
    Reporter:  tomeu                      |          Owner:  tomeu                      
        Type:  defect                     |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  sugar                      |        Version:  Unspecified                
    Severity:  Unspecified                |       Keywords:                             
Distribution:  Unspecified                |   Status_field:  Unconfirmed                
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 from #1311:

 {{{
 FWIW, holding Alt down in my F11 sugar-jhbuild environment seems to behave
 like an auto key repeat, it is as if the entire set of icons are being
 continually re-generated/drawn rather than just on key down, key up. CPU
 load goes through the roof, and if I hold Alt for 3-4 sec or more the
 machine is locked up for 7-8 seconds.
 }}}

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Ticket URL: <http://dev.sugarlabs.org/ticket/1316>
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