Regression: Some J2DBench tests are 3-4 times slower on Win XP for 1.4.0_03b1

J2DBench is much slower on 1.4.0_03b1 compared to 1.4.0_02b2 (repspin of b2)
It appears to only affect Win XP so far. I've tested on 2k and NT and Sparc 2.8, the results look ok with these os's.

I've selected one test to show the regression.
About 10 out of the ~200 tests show regression.
The setup file for this test is attached.

Results at http://latte.ireland/results/1.4.0_03/J2DBench/XPPro/

I also installed Service Pack 1 on Xp to see if it would
make a difference. No difference noticed.


Below is a table of results :

Draws/Sec for 100X100 xBGR Bitmask Image Scaled 1.5x

OS: 140_02b2/3 140_03b1

XP (1st box) 261 67
XP (1st with SP 1) 262 67
XP (2nd) 145 40.7
XP (3rd) 145 36
NT 163 156
2K 160 145
Sparc 2.8 34 34


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