unable to remap C:\cygwin\bin\tk84.dll

While installing PIL(Python Imaging Libary) on Cygwin, I ran into the following error:
5 [main] python 4388 C:\cygwin\bin\python.exe: *** fatal error - unable to remap C:\cygwin\bin\tk84.dll to same address as parent(0x410000) != 0
x700000
22 [main] python 4636 fork: child 4388 - died waiting for dll loading, errno 11
error: Resource temporarily unavailable

Fortunately, with the help of Google, it is easy to find an existing solution from Datahammer's blog:
c:\cygwin\bin\ash
cd /bin
./rebase -b 0x100000000 tk84.dll

Rerun the PIL setup.py install in Cygwin shell.

Update: If you run into remap error on Cygwin, you could try rebaseall
c:\cygwin\bin\ash
cd /bin
./rebaseall