Is rake supposed to be really slow?

I'm using InstantRails and running rake in a project with one unit
test and two functional tests and it takes 33 seconds total. Is that
normal? It seems really slow to me.

When I turn on trace I can see that it spends most of its time in
"Execute environment" and loading the test files:

C:/InstantRails/ruby/bin/ruby -Ilib;test "C:/InstantRails/ruby/lib/
ruby/gems/1.8/gems/rake-0.7.2/lib/rake/rake_test_loader.rb" "test/unit/
user_test.rb"

Anyone else have this problem or is it normal? Thanks.