file regex testing broken?

[Mike Jackson]

I have the following rule in my monitrc:

check file errorlog with path /usr/local/apache/logs/error_log
  if match "Premature end of script headers" then alert

The problem is, whenever it matches, the status on the status page remains 
at "Regex match" - it never resets to being clean, even if the logfile 
rotates (which it does every morning) and no longer contains the string. It 
only resets if I restart monit. Since the log shrinks, monit should reset 
the read position to the beginning, unless monit is still accessing the file 
by inode, and that's not changing in the rotation process. (That seems 
unlikely, because the log rotation script writes out new files to a temp 
directory, then moves them into place. The historical file has a new 
filename, and the new error_log should be shorter since the previous day's 
entries are deleted.)

It only sends an alert once, thank goodness.

I'm using monit 4.6 on a Redhat ES4 box (running the x86_64 version on an 
Opteron processor, if that would make a difference). Any help would be 
appreciated.