I had a similar problem. It turned out that the home directory is on a network drive, and this caused a lot of slowdowns.
You can check your home directory by typing echo $HOME in Git bash. If it points to a network drive, you can change it to a local path (for example, C:\documents and settings\<login> on XP) by setting the HOME environment variable in Windows.
If startup is still slow, see if the start directory for the Git Bash shortcut is %HOMEDRIVE%%HOMEPATH% . If so, try changing it to %HOME% .
Risingson
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