Running XF4.2 on i386 on a current from early Jan things work fine except that 
any glib based program (well confirmed for gnumeric, gimp and xmms at least) 
causes the X server to effectively hang as soon as you start the application.

Tracing the Xserver once its in this state gives:

		[...]
   274 XFree86  PSIG  SIGALRM caught handler=0x80d54f0 mask=() code=0x0
   274 XFree86  RET   select -1 errno 4 Interrupted system call
   274 XFree86  CALL  __sigreturn14(0xbfbfd51c)
   274 XFree86  RET   __sigreturn14 JUSTRETURN
   274 XFree86  CALL  select(0x100,0,0,0,0xbfbfd5c0)
   274 XFree86  PSIG  SIGALRM caught handler=0x80d54f0 mask=() code=0x0
   274 XFree86  RET   select -1 errno 4 Interrupted system call
   274 XFree86  CALL  __sigreturn14(0xbfbfd51c)
   274 XFree86  RET   __sigreturn14 JUSTRETURN
   274 XFree86  CALL  select(0x100,0,0,0,0xbfbfd5c0)
   274 XFree86  PSIG  SIGALRM caught handler=0x80d54f0 mask=() code=0x0
   274 XFree86  RET   select -1 errno 4 Interrupted system call
   274 XFree86  CALL  __sigreturn14(0xbfbfd51c)
   274 XFree86  RET   __sigreturn14 JUSTRETURN
   274 XFree86  CALL  select(0x100,0,0,0,0xbfbfd5c0)
   274 XFree86  PSIG  SIGALRM caught handler=0x80d54f0 mask=() code=0x0
   274 XFree86  RET   select -1 errno 4 Interrupted system call
   274 XFree86  CALL  __sigreturn14(0xbfbfd51c)
   274 XFree86  RET   __sigreturn14 JUSTRETURN
   274 XFree86  CALL  select(0x100,0,0,0,0xbfbfd5c0)
		[...]


Anyone else seeing this or just as importantly anyone else not seeing this on 
a similar system?  Any ideas whats happening?
Its happened on machines with matrox and ati cards in it so its not driver 
specific.

cheers
mark