FULL PRODUCT VERSION :
java version "1.6.0"
Java(TM) SE Runtime Environment (build 1.6.0-b105)
Java HotSpot(TM) Client VM (build 1.6.0-b105, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Windows XP

A DESCRIPTION OF THE PROBLEM :
When submitting a form with GET the previous full URL is kept resulting in a malformed URL being submitted.

For example, a form located at
http://example.com/form?var=1&var2=1
would submit var3 and var4 as
http://example.com/form?var=1&var=2?var3=1&var4=1

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Create a form that is generated by some GET variables and then submit again from there.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The previous variables should not be resubmitted.
ACTUAL -
The previous variables are resubmitted

REPRODUCIBILITY :
This bug can be reproduced always.