problem with HTTP POST

[kgaliy@xxxxxxxxxxx]

Hi All!
I`m using LVS more then one year for two SQUID servers balancing. And i
have within this period such problem:

Sometimes when user posts HTML FORM to Internet via LVS + SQUID, he gets
internal browser error message: server not found
(for example: when i searching on Microsoft sites or posting message to
conference), but if this post was sent direct thru SQUID then it's OK!!!
Could  anybody  help me with  this issue?

P.S. IMHO I have this problem, when post size is greater then 255 bytes.