gdb && Eclipse && Harvard cpu

I use avr-gdb 6.5 && simulavr (latest WinAVR package). When C-program contains static variables, gdb works fine (requests locals and variables led to generation packets like $m800060).
But if I use stack local variables, command "x my_var" led to the packet like $m60 (not $m800060).
And "x *&my_var" works fine - "$m800060").
why?

I use Eclipse (not command line) where disassemble and inspecting locals and variables are automatic, so it is important for me to correct this problem.