Well, I did'n know about the existence of a 64 bit version of Java, but after reading your response I search and installed it, now the version installed is jre-6u12 (the latest) and the memory usage is even greater than with the 32 bit version I had formerly installed, because now it reaches aprox. 222 mb of memory usage in the task manager, and the performance remains as bad as before.

K. Next, do you have any plugins installed, or is it just the base, brand new install?

Did you use the Windows installer? Or the Java installer?

If you used the Windows installer, did you leave the server option checked?

You can try changing the shortcut and add the '-noserver' option. Do this after actually exiting jEdit (File -> Exit) and ensuring jEdit is no longer running.

Can you try running jEdit directly? Navigate to the installation directory on the command line and run "java -jar jedit.jar". Do you see the same performance issues this way? If not, try running it using javaw, "javaw -jar jedit.jar".

Lastly, which version of jEdit are you running? The latest development version or the current "final" release?

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I have some plugins installed. But I tried it without any plugin and the result was the same.
I used the Windows installer. But I extract it with Universal Extractor for make it semi-portable.
I tried your suggestion of add to the shortcut the -noserver parameter, and the memory usage decreased to 177 mb, but this is a huge usage yet.
With the option of navigate via cmd and execute jedit.jar the results were the same than via clicking the executable.
And regards to the Jedit version it is the last development version. I tried the stable and the ram usage was better with 113 mb, but too big yet, i think.
Pd. regards to the performance (scrolling text for example) I achieve better results in development version deselecting Options/text area/fractional font metrics.

Hmm.. K. Well, I'm out of ideas.

If you are willing, could you please bring this up in the user's mailing list?

The core developers frequent the lists more than the forums.

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Ok. Where is that?

There's a link over on the right hand side of this site.

https://lists.sourceforge.net/lists/listinfo/jedit-users


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FYI: Fresh started jEdit with some plugins and blank document in Vista x64 with 64bit JRE Java 6 Update 11: 60Mb; internal (displayed in jEdit): 4/7Mb