Unusual files in the root

After today's outage at the Planet, I noticed some unusual files in root of one of my Linux RH3 servers. All are zero byte files, about 50 of them, all written in about 10 minutes time. Here's an example:

-rw-r--r-- 1 root root 0 Mar 31 07:29 ^G^G^G^G^G^G^G^G^G^G^G^G#
-rw-r--r-- 1 root root 0 Mar 31 07:30 ^G^G^G^G^G^G^G^G^G^G^G^G^G^G^G^G^G^G^G^
-rw-r--r-- 1 root root 0 Mar 31 07:30 G^G^G^G^G^G^G^G^G^G^G^G^G^G^G^G^G^G^G^G^G^G^

and similar ones like this:

-rw-r--r-- 1 root root 0 Mar 31 07:24 sh-2%
-rw-r--r-- 1 root root 0 Mar 31 07:33 sh-2.05
-rw-r--r-- 1 root root 0 Mar 31 07:23 sh-2.05b
-rw-r--r-- 1 root root 0 Mar 31 07:33 sh-2.05b#

Any idea what they're from

 

 

 

 

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