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									 Almost all the time, I end up with
no memory available and the system halted. At the
beginning, memory is not a problem.  As time goes on, allocated memory increases even if I do not generate new variables.  For example, I keep using 'print' or 'help'.  Finally no free memory is available.  When I run a huge program unknowingly, the system halts.  Also windows multi-tasking becomes impossible.  
Why does this happen?  I am using IDL 5.4 on Pentium III 700 MHz, 392 M RAM, 6Gb HDD. 
									
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