eTSrv crash

I recently get the following console messages of a crash

09/04/14 12:28:23,222 ReportCrash[1713]: com.apple.message.domain: com.apple.crashreporter.writereport.crash

com.apple.message.signature: eTSrv

com.apple.message.signature2: UNBUNDLED ||| ???

com.apple.message.signature3: 8BFD468CE11655DDA441A148A5BA95C4

com.apple.message.result: NO

com.apple.message.summarize: YES

Sender_Mach_UUID: 04533D37-3F71-36D5-A0EA-A90BB0D25179

and sometimes my macbook looses wifi connection to our network. It also seems to slow down.

Any hints?

Yours

Pierre