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This is a split off from Bug 36493. Under JAWS 4.5 the performance of SWT is very slow. Under 4.0 this was not an issue. I am running XP and there appears to be greater performance issues in 2k than on XP (Matt King has played his JAWS over the phone for me on 2K). Creation of widgets in particular can be very bad as we see this the most when cruising the preference dialog or switching to a perspective for the first time.
VI to advise.
SWT still waiting to get a JAWS 4.5 license
I now have JAWS 5.0, and it appears to have the same performance issues as JAWS 4.5. I will try to figure out what has changed from 4.0. I also have a copy of Window-Eyes 4.5, and although running Window-Eyes definitely does slow down SWT performance, it is markedly better than JAWS 5.0 (JAWS seems to almost hang the system at times). I have talked to a software developer from Window-Eyes, and he says they have to monitor all TextOut calls, which is a tall order, and definitely one of the reasons why screen reader programs slow down the entire system. (The other is that they need to be notified of every focus change event).
Freedom Scientific released an upgrade for JAWS 5.0 today. This upgrade includes the code that gets rid of the sluggishness we were seeing in Eclipse with 4.51 and 5.0. Anyone, who is authorized for 5.0 can download the upgrade from: http://www.freedomscientific.com/fs_products/software_jaws5intro.asp I think this problem is now solved.
Tried running with the new JAWS 5.0 upgrade (5.00.809). I see SIGNIFICANT performance improvements. EVERYTHING is snappier - startup (JAWS and eclipse), switching perspectives, widget creation, opening dialogs... I am closing this bug report, and I recommend that everyone upgrade to JAWS 5.00.809.