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(174/330) 1306 - Saving remote files via FTP crashes internet connection

JEdit 4.3, FTP-plugin 0.9.7 (Java 1.6.0_18, Windows XP Service Pack 3)

When I try to save via FTP files longer than 520 bytes my internet connection crashes.
I reproduced it on several different FTP servers.

When I reestablish connection and reload this file it turns to consist only one byte - first symbol from what I wanted to save.

Switching off passive mode, two-stage save and cleaning ftp directory cache doesn't help.
I do not use proxy.

At the same time I can view directories and open files via FTP protocol.
Work via SFTP (including saving) runs normally.

I have older JEdit on another machine and older FTP plugin (can't remember exact version now). They work with no such errors.

I use ADSL modem with my computer in inner network and modem directly connected to ISP. Saving seems to crash my modem's inner network: 192.168.1.1 (modem) stops stops to respond ping requests.

Discussion is also here:
http://community.jedit.org/?q=node/view/4390

Similar problem was reported but no solution suggested:
http://sourceforge.net/tracker/index.php?func=detail&aid=2867582&group_id=588&atid=565475

Submitted	ru1234 - 2010-02-22 21:52:07	Assigned
Priority	5	Labels
Status	open	Group	None
Resolution	None

Comments

2010-02-23 19:37:36 elberry	Moving this to Plugin Bugs.
2010-02-23 19:49:24 elberry	I've never had this issue before. Are you running any virus software, which monitors your internet traffic? Have you tried an older version of Java (maybe downgrade to 1.5), or a newer version of Java. The latest version looks to be 1.6.0_18. Also, is your other system in the same location? Behind the same modem, ISP, etc.. Are they both connected using the same medium (wireless vs.wired)?
2010-03-22 19:16:41 ru1234	> Also, is your other system in the same location? Behind the same modem, ISP, etc.. Are they both connected using the same medium (wireless vs.wired)? Actually it is the problem to reproduce - under some ISPs saving via FTP works, under others - does not work. I can't say exactly what the difference, but it is still strange because other programs work with FTP absolutely normally in all cases, including when jEdit fails. FYI: In all cases connection was wired. > Are you running any virus software, which monitors your internet traffic? No. > Have you tried an older version of Java (maybe downgrade to 1.5) No, I don't know how to downgrade. > ... or a newer version of Java. The latest version looks to be 1.6.0_18. I used the latest at the moment - 1.6.0_18 and the latest version of jEdit. Maybe I should collect some particular information about errors (are there any jEdit logs or etc)?