It doesn't happen for me, which version of LWP are you using? 

$ perl -MDevel::VersionDump -MLWP -e 1
Perl version: v5.14.1 on MSWin32
Carp               -    1.26
Config             - Unknown
Devel::VersionDump -    0.02
Exporter           -    5.66
Exporter::Heavy    -    5.66
Fcntl              -    1.11
HTTP::Date         -    6.02
HTTP::Headers      -    6.00
HTTP::Message      -    6.03
HTTP::Request      -    6.00
HTTP::Response     -    6.03
HTTP::Status       -    6.03
LWP                -    6.04
LWP::MemberMixin   - Unknown
LWP::Protocol      -    6.00
LWP::UserAgent     -    6.04
Storable           -    2.30
Time::Local        -  1.2300
URI                -    1.60
URI::Escape        -    3.31
XSLoader           -    0.15
constant           -    1.21
overload           -    1.13
strict             -    1.04
vars               -    1.02
warnings           -    1.12
warnings::register -    1.02

In reply to Re^2: LWP::UserAgent & memory problems by Anonymous Monk
in thread LWP::UserAgent & memory problems by Uree

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