Kaspersky has even deteriorated tremendously!

For years, I use the anti-virus software from Kaspersky and was always very happy (relatively quickly, not viruses). However, with the 2011 version runs just about nothing or only extremely slow:
1. T-Online 6.0 is no longer to start
2. Start IE lasts really long
3. And who wants to retrieve his mail through OE, which was to first set up a coffee and read the paper - then maybe he can receive the first mail.
The hotline responds quickly, also recommends some changes in the settings but allle bring nothing: The entire system (Windows XP) remains extremely unstable and slow.
Conclusion: Stay away if you want to work normally! Too bad that you can so down-update such a good product ...