is it bad or ok?can you help?

I couldnt understand what is " Blocked by Protocol Analysis (Invalid Flag Combination)"
is it a trojan or something else. can you help me? thanx

Date/Time :2008-02-27 11:57:28
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Invalid Flag Combination)
Direction: TCP Incoming
Source: 88.236.29.73:50501
Destination: 192.168.1.2:1241
Reason: ACK FIN RST is an invalid TCP flag combination

Date/Time :2008-02-26 23:56:31
Severity :High
Reporter :Network Monitor
Description: Blocked by Protocol Analysis (Invalid Flag Combination)
Direction: TCP Incoming
Source: 88.236.26.243:50505
Destination: 192.168.1.2:1192
Reason: ACK FIN RST is an invalid TCP flag combination

version 2.4.18.184

IP address 88.236.29.73 is trying to access your machine and the firewall prevented it from succeeding because it looked like suspicious access. Basically the firewall did what it’s suppose to do, it protected you.