Debugged executable not accessible after end of debugging

Hi,

there's the problem that after ending my debugging session the previously  
debugged executable seems to be still 'in use by something' - at least, in  
the course of a subsequent (debug) build the linker complains that it  
cannot write the executable anew because 'access [is] denied'.
The problem occurs repeatedly every 3-5 debug sessions (estimated).

My tools (freshly installed) and platform:
- Eclipse 3.3 'Europa'
- MinGW 3.4.2
- GDB 5.2.1.1 (as downloaded from  
http://sourceforge.net/project/showfiles.php?group_id=2435&package_id=82721,  
so it's 	most probably a version modified(?) for MinGw)
- Windows XP
- Dual core Intel processor

My questions:
Did anybody experience similar problems?
Which is the process to kill (using task manager) in order to 'free'  
executable?


Have a nice day,
Ulrich