Every time i run installation based on visual studio bootstrapper it leaves files in my "C:\Documents and Settings\<UserName>\Local Settings\Temp\" directory.

For example now i have 4 copies of dotnetchk.exe file:

C:\Documents and Settings\<UserName>\Local Settings\Temp\VSD1.tmp\dotnetfx\dotnetchk.exe
C:\Documents and Settings\<UserName>\Local Settings\Temp\VSD2.tmp\dotnetfx\dotnetchk.exe
C:\Documents and Settings\<UserName>\Local Settings\Temp\VSD5.tmp\dotnetfx\dotnetchk.exe
C:\Documents and Settings\<UserName>\Local Settings\Temp\VSD6.tmp\dotnetfx\dotnetchk.exe

And 4 copies of bootstrapper executable:

C:\Documents and Settings\<UserName>\Local Settings\Temp\VSD1.tmp\setup.exe
C:\Documents and Settings\<UserName>\Local Settings\Temp\VSD2.tmp\setup.exe
C:\Documents and Settings\<UserName>\Local Settings\Temp\VSD5.tmp\setup.exe
C:\Documents and Settings\<UserName>\Local Settings\Temp\VSD6.tmp\setup.exe

Is this behavior by design? Is it safe to delete those VSDx.tmp directories?