a horde bug???

[euro_gedimas]

YEsterdays my access_log a full of theses lines:

ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:02 +0200] "GET /imp/login.php/ HTTP/1.1" 200 2849 "-" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:02 +0200] "GET / HTTP/1.1" 302 26 "-" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:04 +0200] "GET /login.php?Horde3=bacf0c673f4e6844ef65c5cec9794178 HTTP/1.1" 302 26 "-" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:04 +0200] "GET /js/horde.js?Horde3=4bb5e6dbd33f7cee76e01260e70a26c2 HTTP/1.1" 200 7084 "http://webmail.worldconnect.lt/imp/login.php/" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:04 +0200] "GET /imp/login.php HTTP/1.1" 200 2799 "-" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:05 +0200] "GET /js/enter_key_trap.js?Horde3=4bb5e6dbd33f7cee76e01260e70a26c2 HTTP/1.1" 200 479 "http://webmail.worldconnect.lt/imp/login.php/" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:05 +0200] "GET /themes/screen.css HTTP/1.1" 304 - "http://webmail.worldconnect.lt/imp/login.php/" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:05 +0200] "GET /themes/bluewhite/screen.css HTTP/1.1" 304 - "http://webmail.worldconnect.lt/imp/login.php/" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:05 +0200] "GET /imp/themes/screen.css HTTP/1.1" 304 - "http://webmail.worldconnect.lt/imp/login.php/" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:05 +0200] "GET /imp/themes/bluewhite/screen.css HTTP/1.1" 304 - "http://webmail.worldconnect.lt/imp/login.php/" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:05 +0200] "GET /js/horde.js HTTP/1.1" 304 - "http://webmail.ilnatele.lt/imp/login.php" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:05 +0200] "GET /themes/graphics/horde-power1.png HTTP/1.1" 304 - "http://webmail.worldconnect.lt/imp/login.php/" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:05 +0200] "GET /js/enter_key_trap.js HTTP/1.1" 304 - "http://webmail.ilnatele.lt/imp/login.php" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:05 +0200] "GET /themes/screen.css HTTP/1.1" 304 - "http://webmail.ilnatele.lt/imp/login.php" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:06 +0200] "GET /themes/bluewhite/screen.css HTTP/1.1" 304 - "http://webmail.ilnatele.lt/imp/login.php" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:06 +0200] "GET /imp/themes/screen.css HTTP/1.1" 304 - "http://webmail.ilnatele.lt/imp/login.php" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:06 +0200] "GET /imp/themes/bluewhite/screen.css HTTP/1.1" 304 - "http://webmail.ilnatele.lt/imp/login.php" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:11:06 +0200] "GET /themes/graphics/horde-power1.png HTTP/1.1" 304 - "http://webmail.ilnatele.lt/imp/login.php" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:14:37 +0200] "GET / HTTP/1.1" 302 26 "-" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:14:38 +0200] "GET /login.php?Horde3=00356d2f4fab302e39b46bde7cc92edc HTTP/1.1" 302 26 "-" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:14:37 +0200] "GET /imp/login.php/ HTTP/1.1" 200 2850 "-" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:14:38 +0200] "GET /imp/login.php HTTP/1.1" 200 2799 "-" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:14:38 +0200] "GET /js/horde.js?Horde3=5c7ea842141dfb215791465c04a39f10 HTTP/1.1" 200 7084 "http://webmail.worldconnect.lt/imp/login.php/" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"
ctv-213-164-109-186.vinita.lt - - [28/Jan/2007:12:14:38 +0200] "GET /js/horde.js HTTP/1.1" 304 - "http://webmail.ilnatele.lt/imp/login.php" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)"

Is it normal? Or there was a horde exploit? Because it was connecting from different IPT's, and to different domains.