windows gdb.exe, setting breakpoints before debugging cause extremely slow loading

[asmwarrior <asmwarrior@gmail.com>]

  Hi, all, I'm a windows gdb user, I have used both official MinGW 
gdb.exe and gdb.exe build myself.

I found that when I set a breakpoint before loading or after loading has 
much different result.
I use GDB.exe under Codeblocks, here is the debugger log when I try to 
debug something:
----------------------------------------------------------------------------
Situation works badly:

I just set breakpoint before I start "run" the debugee

 >>>>>>cb_gdb:
 > break 
"E:/code/cb/cc_branch/src/plugins/codecompletion/parser/parserthread.cpp:471"
No source file named 
E:/code/cb/cc_branch/src/plugins/codecompletion/parser/parserthread.cpp.
Breakpoint 1 
("E:/code/cb/cc_branch/src/plugins/codecompletion/parser/parserthread.cpp:471) 
pending.
 >>>>>>cb_gdb:
 > run

Now, it will take about 1 and a half minutes to start the debugee.

----------------------------------------------------------------------------
But If I do *not* set any breakpoint before running, then ,the loading 
stage is quite fast(about 10 second), after that I can still set 
breakpoint and all the breakpoint works fine.

Not only me find the problem, see the message posted in Codeblocks forum 
by One of Codeblocks developers Pecan:
http://forums.codeblocks.org/index.php/topic,12951.msg87332.html#msg87332

Does this a gdb bug?

Thanks

asmwarrior(ollydbg from codeblocks forum)