Multiple Error Messages, starting With 500 null Error

[chickenloaf]

I've been experiencing multiple error messages with ColdFusion 7.0 on Ubuntu
Linux/Apache2 for the past several days, starting with the 500 null error (see
[url]http://www.adobe.com/cfusion/knowledgebase/index.cfm?id=f9e312a2[/url]), which
ocurred on only part of the site (a set of forms requiring remote login). Now,
the following errors are appearing on various CF forms: "An I/O error while
manipulating the sort index" and "An exception occurred when setting up mail
server parameters" and finally, "No space left on device." All these errors
are occurring on add/edit forms and cffile upload forms that were working fine
a few hours ago and that haven't been changed.

Right now, I'm replacing the license.properties file to deal with the 500
null error. My question is, has anyone else experienced this smattering of
other error messages in conjunction with the 500 null error. Or fast on the
heels of it? What's the deal with the 500 null error, anyway? Has Adobe made
any progress with this issue?

[chickenloaf]

Okay, this is a followup to my previous post
([url]http://www.adobe.com/cfusion/webforums/forum/messageview.cfm?catid=143&threadid[/url]
=1165765&enterthread=y).

Replacing the license.properties file isn't sufficient in addressing the 500
null error. We are running Ubuntu Linux. I understand that I need to replace
jvm 1.5 with jvm 1.4.2. I'm honestly not sure how to detect on Linux which
version of jvm is running or how to make sure that version 1.4.2 is what is
running when we reinstall ColdFusion. If someone could help me with this, I'd
appreciate it. The 500 null error is eating my Web site like the Langoliers.
Even some static .cfm pages are failing now.