I've recently installed Intel C++ Composer XE 2011 with all integration features and after that my Visual Studio 2005 began to start really slow. Visual Studio itself without loading any project starts during about 1 min. Opening of existing project may cause delay about 2-3 mins. After opening is done all works pretty smoth as before installation of Composer. While this delay I can see fully laoded iterface and already opened source file with code but Visual Studio window is "Not responding".
Disabling integration features eliminates this delay.
Windows 7 x64, Visual Studio 2005 SP 1 (v8.0.50727.867), Intel C++ Composer XE 2011 update 5 (v2.154).