New Post: Misterious Leaks

There are always a couple (up to dozens) of the following entries in the log:

__WARNING: Visual Leak Detector detected memory leaks!
---------- Block 274741 at 0x00FD9258: 1316 bytes ----------
Leak Hash: 0x00000000 Count: 1
Call Stack:


---------- Block 274827 at 0x00FD9EE8: 1316 bytes ----------
Leak Hash: 0x00000000 Count: 1
Call Stack:


Any ideas where they are from ?