Out of system resources

Stack trace:
(001FEB77)
(001FEC1A)
(001FEC4B)
(00203E47)
(00205F03)
(002318C8)
(0025720D)
(00256E48)
(0025C1FA)
(00256015)
(00077C3C)
(0038109C)
(0003AF19) USER32.dll
(000373E5) USER32.dll
(00036C99) USER32.dll
(00036A7B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.