Link error

[SeniorLee]

Error	11	error LNK2005:
___@@_PchSym_ at 00@UnbwlxfnvmgUerhfzoLhgfwrlLCAAFUkilqvxghUerhfzowruuUerhfzowruuUivovzhvUoxhOlyq@
already defined in LCS.obj	myPanel.obj

Error	12	error LNK2005:
___@@_PchSym_ at 00@UnbwlxfnvmgUerhfzoLhgfwrlLCAAFUkilqvxghUerhfzowruuUerhfzowruuUivovzhvUoxhOlyq@
already defined in LCS.obj	myTextCtrl.obj

Error	13	error LNK2005:
___@@_PchSym_ at 00@UnbwlxfnvmgUerhfzoLhgfwrlLCAAFUkilqvxghUerhfzowruuUerhfzowruuUivovzhvUoxhOlyq@
already defined in LCS.obj	VisualDiff.obj

Error	14	fatal error LNK1169: one or more multiply defined symbols
found	d:\abc.exe	1


well... i don't know what to do with these... this happens only when i
try to build RELEASE version.

please give me any hint.