BSODs/Win7 x86

Hello,
recently my system started to blue-screen very frequently. Problems stopped after I’ve uninstalled Avast. I suppose the bluescreens could be related to recent Avast 7.0.1474 update. I’ve uploaded a few minidumps and one kernel memory dump to http://ulozto.cz/xKT8Qcb/dumps-7z . I’m running Windows 7 Enterprise x64 on Dell XPS L502X/12GB RAM/Intel 2760QM/SSD X25-M 80GB.

Hope this helps