For some unknown reason, more or less every hour, one of the svchost.exe process (LocalServiceNoNetwork) of my Win 7 takes up to 4Gb of memory ! If I don't manually kill the process it makes the PC freeze for some minutes...
What's strange is that it never happened before, and I did nothing special.
When i have a look at the properties of this process, it says i've got ntdll.dll!rtl user thread start started 8 times. And when it stops everything's normal again.
What's going on and how can i fix this please ? Any help much apreciated. thanks!